251
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Hahnel AC, Eddy EM. Cell surface markers of mouse primordial germ cells defined by two monoclonal antibodies. ACTA ACUST UNITED AC 1986. [DOI: 10.1002/mrd.1120150104] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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252
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Motta PM, Makabe S. Elimination of germ cells during differentiation of the human ovary: an electron microscopic study. Eur J Obstet Gynecol Reprod Biol 1986; 22:271-86. [PMID: 3770277 DOI: 10.1016/0028-2243(86)90115-2] [Citation(s) in RCA: 36] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Observations by scanning and transmission electron microscopy during ovarian development (from 7 wk until term of gestation) showed numerous germ cells within the superficial epithelial layer covering the ovary. In early stages of differentiation (between 7 and 11 wk), germ cells appeared to be actively migrating to the surface of the ovary by ameboid-like movements. Later, the transfer of the germ cells to the surface epithelium was also occurring passively, as a consequence of an intense proliferation of germ and somatic cells - arranged in clusters and cords - migrating towards the most superficial areas of the ovary. The present evidence suggests that a number of primordial germ cells - as well as oogonia and oocytes - which lie in the superficial epithelium can leave the ovary and ultimately rest freely upon its surface. Elimination of germ cells during differentiation of the ovary in humans was always paralleled by necrosis of oogonia and oocytes and atretic alteration of primitive follicles. The significance of these processes is discussed in relation to the reduction of the pool of oocytes at birth.
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253
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Alvarez-Buylla A, Merchant-Larios H. Mouse primordial germ cells use fibronectin as a substrate for migration. Exp Cell Res 1986; 165:362-8. [PMID: 3720854 DOI: 10.1016/0014-4827(86)90590-2] [Citation(s) in RCA: 34] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The behavior in vitro of mouse primordial germ cells (PGCs) on different substrates was studied by means of microcinematography. It was observed that for displacement, the PGCs required fibronectin in the substrate and that this glycoprotein was present in vivo in those routes along which the cells moved. It was concluded that fibronectin plays an important role in the migration of the PGCs to the genital crests.
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254
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Kaufman MH, Schnebelen MT. The histochemical identification of primordial germ cells in diploid parthenogenetic mouse embryos. THE JOURNAL OF EXPERIMENTAL ZOOLOGY 1986; 238:103-11. [PMID: 3711814 DOI: 10.1002/jez.1402380113] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
An attempt has been made to improve the early post-implantation development potential of diploid parthenogenetic mouse embryos by transferring parthenogenetic blastocysts to one uterine horn of a pseudopregnant recipient and a similar number of fertilized embryos to the contralateral horn. In control studies, diploid parthenogenetic embryos were transferred to both uterine horns of appropriate recipients. Unfortunately no obvious advantage appeared to be gained by carrying out the former manoeuvre. A significant improvement in the development potential of the parthenogenones could have indicated that their poor post-implantation survival might have been associated with a deficiency, possibly of hormonal origin, in the functioning of their decidual reaction. However, sufficient somite-containing parthenogenetic embryos were obtained in this study to allow a comparison to be made between them and fertilized embryos that were morphologically at a comparable stage of development. The parthenogenones were found to have a markedly smaller crown-rump length than their fertilized counterparts. A high proportion of both the parthenogenetic and fertilized embryos were subsequently fixed and appropriately stained in order to localize alkaline phosphatase activity. The analysis of this material clearly demonstrated that parthenogenetic mouse embryos are in fact capable of producing primordial germ cells. The latter were recognized by their morphology, histochemical staining appearance, and characteristic location, being found in the early 'turned' embryos within the dorsal mesentery in close proximity to the developing gut tube, and in the more advanced limb-bud stage embryos within the gonadal ridges.
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255
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Wide M. Lead exposure on critical days of fetal life affects fertility in the female mouse. TERATOLOGY 1985; 32:375-80. [PMID: 4082068 DOI: 10.1002/tera.1420320307] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Female mice were exposed to lead in utero by intravenous injection of lead chloride into the mothers at different stages of pregnancy. At a mature age the mice exposed as fetuses (F1 generation) conceived at a normal rate, but the litter size and fetal survival varied significantly. Small litters and increased numbers of fetal deaths were observed in mice exposed to lead on day 8 of intrauterine life. The live fetuses in this group were normal with respect to weight and morphological appearance. Serum levels of estradiol and progesterone, measured on day 17 of pregnancy, did not differ significantly between F1 mice of a control, unexposed group and of the group exposed to lead on day 8 of intrauterine life. Ovarian follicle counts revealed a significantly smaller number of primordial follicles in the latter group. It is suggested that the exposure to lead at a time of early organogenesis caused the observed fertility decrease by interfering with the development of the female germ cells.
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256
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Shinoda J, Miwa Y, Sakai N, Yamada H, Shima H, Kato K, Takahashi M, Shimokawa K. Immunohistochemical study of placental alkaline phosphatase in primary intracranial germ-cell tumors. J Neurosurg 1985; 63:733-9. [PMID: 4056875 DOI: 10.3171/jns.1985.63.5.0733] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Indirect immunoperoxidase staining by the peroxidase-antiperoxidase (PAP) technique was carried out on 23 human primary intracranial germ-cell tumors (17 germinomas, one embryonal carcinoma, one yolk-sac tumor, three teratomas, and one teratoma with embryonal carcinoma) and on six human primary pineal non-germ-cell tumors (one pineocytoma, two pineoblastomas, two astrocytomas, and one glioblastoma multiforme). The technique used specific rabbit antisera against placental alkaline phosphatase (PLAP), alpha-fetoprotein (AFP), and human chorionic gonadotropin (HCG). Thirteen of 17 intracranial germinomas (76.5%) showed positive staining for PLAP mainly on the tumor cell membrane. In six primary intracranial non-seminomatous germ-cell tumors, there was weak positive staining indicating the presence of PLAP in only a few cells of one embryonal carcinoma, and in some glandular epithelial cells of one teratoma; this staining was limited to the cytoplasm. None of the other six primary pineal non-germ-cell tumors showed any positive PLAP reaction. From these results, PLAP was shown to be very useful in histopathology as a diagnostic tumor marker of intracranial germinoma. Positive AFP staining was seen in several yolk-sac tumor cells and a few embryonal carcinoma cells. However, no intracranial germinomas and non-germ-cell tumors of the pineal region showed positive reaction. As for HCG, only one suprasellar germinoma and one pineal embryonal carcinoma among 29 specimens contained a few positive-staining tumor cells.
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257
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Merchant-Larios H, Mendlovic F, Alvarez-Buylla A. Characterization of alkaline phosphatase from primordial germ cells and ontogenesis of this enzyme in the mouse. Differentiation 1985; 29:145-51. [PMID: 4043584 DOI: 10.1111/j.1432-0436.1985.tb00308.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The physical characteristics of nonspecific alkaline phosphatase (ALP) from both mouse primordial germ cells (PGCs) and gonads were compared with corresponding samples from other organs at different developmental stages. Combining a cytochemical approach with polyacrylamide gel electrophoresis and the use of specific inhibitors, as well as neuraminidase treatment, heat sensitivity tests, and molecular-mass criteria, it was found that only one ALP isoenzyme was present in all organs up to day 14 of gestation. Distinct ALP isoenzymes first appeared in the small intestine on day 15 and, thereafter, in all other tissues except the gonads. In these organs, the embryonal ALP isoenzyme seemed to be retained until adulthood. Although the placenta had a different ALP isoenzyme than the embryo at all stages, this isoenzyme was found to be similar to that in the maternal decidual tissues. Therefore, we conclude that the mouse embryo only expresses one type of ALP that can be considered "embryonal", regardless of the organ in which it first appears, and that this ALP is conserved in the gonads.
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258
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Fujimoto T, Yoshinaga K, Kono I. Distribution of fibronectin on the migratory pathway of primordial germ cells in mice. Anat Rec (Hoboken) 1985; 211:271-8. [PMID: 3993980 DOI: 10.1002/ar.1092110307] [Citation(s) in RCA: 51] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The distribution and localization of fibronectin (FN) on the migratory pathway of primordial germ cells (PGCs) in mouse embryos were studied immunocytochemically at the light and electron microscopic levels. In embryos 9.5 to 11.0 days of gestation, the dorsal mesentery as the final region through which PGCs migrate was rich in FN. At this stage, migrating PGCs often showed amoeboid features with pseudopods in contact with neighboring mesentery (mesenchymal) cells. With the electron microscope, the reaction product to FN was visualized on the surfaces of somatic cells and of PGC pseudopods and at the site of contact between PGCs and somatic cells. Abundant extracellular FN was also found, probably binding with the extracellular matrices. By 11.5 to 12.0 days, when PGCs had arrived in the gonadal anlage, FN reaction had weakened or disappeared in the dorsal mesentery. Thus, the results suggest that FN plays a significant role in the migration of PGCs at least in the last portion of the migratory pathway.
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259
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Zamboni L, Upadhyay S. Germ cell differentiation in mouse adrenal glands. THE JOURNAL OF EXPERIMENTAL ZOOLOGY 1983; 228:173-93. [PMID: 6663256 DOI: 10.1002/jez.1402280204] [Citation(s) in RCA: 125] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The differentiation of germ cells in the adrenal glands of 26 male and female Swiss albino mice was studied in sequential stages of development, from day 12 1/2 of intrauterine life to postnatal day 21; the study was performed by means of high-resolution light microscopy and electron microscopy. In 12 1/2- and 13-day-old embryos, the ectopic cells had morphologic characteristics typical of primordial germ cells, whereas in 14- and 15-day-old fetuses they were identifiable as oogonia. In male and female fetuses from day 17 to term, all ectopic germinal elements entered meiotic prophase, reached diplotene, and differentiated into oocytes in perfect adherence to mouse ovarian timetables. In the postnatal animals, females as well as males, all oocytes progressed through the postmeiotic phase of growth just as they normally do in ovarian follicles, and, in the 2- and 3-week-old animals, they displayed features identical to those exhibited by oocytes in large antral follicles, including a zona pellucida. Germinal elements were no longer seen in the adrenals of animals older than 3 weeks. Our study shows that mammalian germ cells are capable of developing even outside the gonads, and that in ectopic sites they all differentiate as oocytes irrespective of their genetic sex.
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260
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Kasper CS, Schneider NR, Childers JH, Wilson JD. Suprasellar germinoma. Unresolved problems in diagnosis, pathogenesis, and management. Am J Med 1983; 75:705-11. [PMID: 6624780 DOI: 10.1016/0002-9343(83)90461-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
A suprasellar germinoma, initially thought to be granulomatous diencephalitis of uncertain cause, responded following chloramphenicol and methicillin treatment both by clinical and radiographic criteria and was not diagnosed until a third biopsy was performed. Analysis of this case and review of the literature lead to the conclusion that adequate diagnostic workup of such lesions requires that biopsy be extensive enough to include the central core as well as the granulomatous reaction that surrounds such tumors. Furthermore, since the degree of inflammation may fluctuate, regression does not mean that the lesion is not neoplastic in origin. In the present instance, the correct diagnosis could have been made earlier if the beta-chain of human chorionic gonadotropin had been measured in spinal fluid.
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261
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262
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Phillips RJ, Hulse EV. Two extragonadal teratomas in a mouse, with discussion of possible histogenesis. J Comp Pathol 1982; 92:273-84. [PMID: 7085943 DOI: 10.1016/0021-9975(82)90086-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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263
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Swartz WJ. Acid and alkaline phosphatase activity in migrating primordial germ cells of the early chick embryo. Anat Rec (Hoboken) 1982; 202:379-85. [PMID: 7072983 DOI: 10.1002/ar.1092020310] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Little information is available concerning enzyme activity in primordial germ cells (PGCs) of the early chick embryo. The present study is designed to examine the disposition of alkaline and acid phosphatase activity in the PGCs during their migration into the developing gonads of the early chick embryo. White Leghorn chick embryos were sacrificed at daily intervals from 1 to 6 days of incubation. Following sacrifice the embryos were fixed, dehydrated, and embedded in glycol methacrylate (GMA). Alkaline and acid phosphatases were demonstrated by the simultaneous diazo-coupling method. The embryonic tissues at the different ages were examined for PGCs and the histochemical reactions for alkaline and acid phosphatases in these cells evaluated. Acid phosphatase activity did not appear within PGCs until 3 days of incubation, and then in only a few PGCs in the active phase of their migration in the dorsal mesentery, suggesting that there is no large wave of degeneration of these cells during migration. Alkaline phosphatase activity was observed as early as 2 days of incubation in PGCs during the passive phase of their migration in extraembryonic blood vessels. Alkaline phosphatase-positive PGCs in the active phase of migration were also found in the dorsal mesentery; however, the cellular localization of this enzyme differed from that observed in the passively migrating PCGs, indicating that there are alterations in the metabolic activities of these cells during the active and passive phases of migration.
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264
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Benham FJ, Andrews PW, Knowles BB, Bronson DL, Harris H. Alkaline phosphatase isozymes as possible markers of differentiation in human testicular teratocarcinoma cell lines. Dev Biol 1981; 88:279-87. [PMID: 7308577 DOI: 10.1016/0012-1606(81)90171-8] [Citation(s) in RCA: 36] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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265
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Eddy EM, Clark JM, Gong D, Fenderson BA. Origin and migration of primordial germ cells in mammals. ACTA ACUST UNITED AC 1981. [DOI: 10.1002/mrd.1120040407] [Citation(s) in RCA: 92] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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266
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Strickland S, Smith KK, Marotti KR. Hormonal induction of differentiation in teratocarcinoma stem cells: generation of parietal endoderm by retinoic acid and dibutyryl cAMP. Cell 1980; 21:347-55. [PMID: 6250719 DOI: 10.1016/0092-8674(80)90471-7] [Citation(s) in RCA: 666] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
It has previously been shown that retinoic acid induces multiple phenotypic changes in cultures of F9 teratocarcinoma stem cells. In this paper we demonstrate that these retinoid-generated cells can be converted to yet another cell type by compounds that elevate cAMP concentrations. The phenotype of the new cell type is characterized by the synthesis of plasminogen activator, laminin and type IV collagen, and by very low levels of alkaline phosphatase and lactate dehydrogenase. The secretion of plasminogen activator and type IV collagen, and low levels of alkaline phosphatase and lactate dehydrogenase, have been previously shown to be properties of parietal endoderm, an extraembryonic cell which is generated early in mouse embryonesis. We show here that parietal endoderm also synthesizes laminin. The cell type generated by retinoic acid and dibutyryl cAMP treatment is therefore indistinguishable from definitive parietal endoderm. Analysis of the final phenotype indicates that it is not dependent upon the continued presence of either compound, and that cAMP agents are active only on cells that have been treated with retinoic acid.
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267
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Guraya SS. Recent progress in the morphology, histochemistry, biochemistry, and physiology of developing and maturing mammalian testis. INTERNATIONAL REVIEW OF CYTOLOGY 1980; 62:187-309. [PMID: 6988360 DOI: 10.1016/s0074-7696(08)61901-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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268
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Pedersen RA, Brandriff B. Radiation- and drug-induced DNA repair in mammalian oocytes and embryos. BASIC LIFE SCIENCES 1980; 15:389-410. [PMID: 7011309 DOI: 10.1007/978-1-4684-3842-0_27] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A review of studies showing ultraviolet- or drug-induced unscheduled DNA synthesis in mammalian oocytes and embryos suggests that the female gamete has an excision repair capacity from the earliest stages of oocyte growth. The oocyte's demonstrable excision repair capacity decreases at the time of meiotic maturation for unknown reasons, but the fully mature oocyte maintains a repair capacity, in contrast to the mature sperm, and contributes this to the zygote. Early embryo cells maintain relatively constant levels of excision repair until late fetal stages, when they lose their capacity for excision repair. These apparent changes in excision repair capacity do not have a simple relationship to known differences in radiation sensitivity of germ cells and embryos.
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269
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Heath JK. Characterization of a xenogeneic antiserum raised against the fetal germ cells of the mouse: cross-reactivity with embryonal carcinoma cells. Cell 1978; 15:299-306. [PMID: 359167 DOI: 10.1016/0092-8674(78)90105-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A xenogeneic antiserum (PG-1) raised against the germ cells of the 13.5d p.c. mouse conceptus reacts with the fetal germ cells of both sexes and adult male germ cells, but not with any nongerminal tissue that has been tested. PG-1 can also react with the EC cells of four different teratocarcinoma cell lines. There are, however, marked differences in the absorptive capacity of the different EC cell lines. The antigen(s) recognized by the antiserum are confined to only a proportion of cells in some EC lines. This antiserum has a number of potential applications in studies of the origin and development of the mouse germ cell lineage.
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270
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Hogan JC. An ultrastructural analysis of "cytoplasmic markers" in germ cells of Oryzias latipes. JOURNAL OF ULTRASTRUCTURE RESEARCH 1978; 62:237-50. [PMID: 565824 DOI: 10.1016/s0022-5320(78)80021-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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271
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Guraya SS. Recent advances in the morphology, histochemistry, and biochemistry of the developing mammalian ovary. INTERNATIONAL REVIEW OF CYTOLOGY 1977; 51:49-131. [PMID: 338539 DOI: 10.1016/s0074-7696(08)60226-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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272
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Abstract
An attempt was made to re-examine the location of the primordial germ cells (PGCs) in very young chick embryos. Freshly laid blastoderms, prior to hypoblast formation, of a known anterio-posterior axis, were transversely bisected and each half was separately grown in vitro. Both anterior and posterior halves were shown to be fertile and each was shown to contain roughly the same amount of PGCs as a normal control embryo. It has been concluded that in the chick as well as in the duck there is no concentration of cells containing germinal plasm in the posterior part of the blastoderm. Two other possibilities should be investigated: 1. A concentric arrangement of cells containing germinal plasm. 2. The absence of a germinal plasm and a relatively late appearance of PGCs as a result of induction.
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273
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Fujimoto T, Ninomyiya T, Ukeshima A. Observations of the primoridal germ cells in blood samples from the chick embryo. Dev Biol 1976; 49:278-82. [PMID: 943349 DOI: 10.1016/0012-1606(76)90273-6] [Citation(s) in RCA: 56] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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274
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Clark JM, Eddy EM. Fine structural observations on the origin and associations of primordial germ cells of the mouse. Dev Biol 1975; 47:136-55. [PMID: 173592 DOI: 10.1016/0012-1606(75)90269-9] [Citation(s) in RCA: 114] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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275
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Sobis H, Vandeputte M. Sequential morphological study of teratomas derived from displaced yolk sac. Dev Biol 1975; 45:276-90. [PMID: 1193299 DOI: 10.1016/0012-1606(75)90066-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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276
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277
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McCoshen JA, McCallion DJ. A study of the primordial germ cells during their migratory phase in Steel mutant mice. EXPERIENTIA 1975; 31:589-90. [PMID: 1170085 DOI: 10.1007/bf01932475] [Citation(s) in RCA: 119] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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278
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279
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Eddy EM. Fine structural observations on the form and distribution of nuage in germ cells of the rat. Anat Rec (Hoboken) 1974; 178:731-57. [PMID: 4815140 DOI: 10.1002/ar.1091780406] [Citation(s) in RCA: 110] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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280
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281
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Damjanov I, Solter D. Experimental teratoma. CURRENT TOPICS IN PATHOLOGY. ERGEBNISSE DER PATHOLOGIE 1974; 59:69-130. [PMID: 4611693 DOI: 10.1007/978-3-642-65857-0_2] [Citation(s) in RCA: 142] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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282
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Zamboni L, Merchant H. The fine morphology of mouse primordial germ cells in extragonadal locations. THE AMERICAN JOURNAL OF ANATOMY 1973; 137:299-335. [PMID: 4716356 DOI: 10.1002/aja.1001370305] [Citation(s) in RCA: 70] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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283
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Jeon KW, Kennedy JR. The primordial germ cells in early mouse embryos: light and electron microscopic studies. Dev Biol 1973; 31:275-84. [PMID: 4787198 DOI: 10.1016/0012-1606(73)90264-9] [Citation(s) in RCA: 39] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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284
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Fritts-Williams ML, Meyer DB. Isolation and culture of homogenous populations of primordial germ cells in chick. Exp Cell Res 1972; 75:512-4. [PMID: 4566306 DOI: 10.1016/0014-4827(72)90459-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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285
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Damjanov I, Solter D, Skreb N. Enzyme histochemistry of experimental embryo-derived teratocarcinomas. ZEITSCHRIFT FUR KREBSFORSCHUNG UND KLINISCHE ONKOLOGIE. CANCER RESEARCH AND CLINICAL ONCOLOGY 1971; 76:249-56. [PMID: 4401423 DOI: 10.1007/bf00304029] [Citation(s) in RCA: 34] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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286
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Damjanov I, Solter D, Škreb N. Teratocarcinogenesis as related to the age of embryos grafted under the kidney capsule. Dev Genes Evol 1971; 167:288-290. [DOI: 10.1007/bf00584254] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/1971] [Indexed: 11/29/2022]
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287
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288
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289
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Dehner LP, Norris HJ, Garner FM, Taylor HB. Comparative pathology of ovarian neoplasms. 3. Germ cell tumours of canine, bovine, feline, rodent and human species. J Comp Pathol 1970; 80:299-306. [PMID: 5449975 DOI: 10.1016/0021-9975(70)90098-8] [Citation(s) in RCA: 50] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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290
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Hubert J. Etude cytologique et cytochimique des cellules germinales des reptiles au cours du d�veloppement embryonnaire et apr�s la naissance. Cell Tissue Res 1970. [DOI: 10.1007/bf00335229] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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291
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292
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Blandau RJ. Observations on living oogonia and oocytes from human embryonic and fetal ovaries. Am J Obstet Gynecol 1969; 104:310-9. [PMID: 4890279 DOI: 10.1016/s0002-9378(16)34185-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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293
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Clawson RC, Domm LV. Origin and early migration of primordial germ cells in the chick embryo: a study of the stages definitive primitive streak through eight somites. THE AMERICAN JOURNAL OF ANATOMY 1969; 125:87-111. [PMID: 5770163 DOI: 10.1002/aja.1001250105] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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294
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Odor DL, Blandau RJ. Ultrastructural studies on fetal and early postnatal mouse ovaries. I. Histogenesis and organogenesis. THE AMERICAN JOURNAL OF ANATOMY 1969; 124:163-86. [PMID: 5774649 DOI: 10.1002/aja.1001240204] [Citation(s) in RCA: 49] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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295
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OOGENESIS AND FOLLICULOGENESIS. Reprod Domest Anim 1969. [DOI: 10.1016/b978-0-12-179251-0.50013-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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Kannankeril JV, Domm LV. Development of the gonads in the female Japanese quail. THE AMERICAN JOURNAL OF ANATOMY 1968; 123:131-46. [PMID: 5702209 DOI: 10.1002/aja.1001230106] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Abstract
The feasibility of studying avian primordial germ cells in blood smears has been demonstrated. Blood smears prepared from chick embryos of stages 13 to 15 (48 to 55 hours) contained primordial germ cells, which were revealed by the periodic acidSchiff reaction. The presence of glycogen in the cytoplasm of the primordial germ cells facilitated their selective identification.
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Gropp A, Ohno S. The presence of a common embryonic blastema for ovarian and testicular parenchymal (follicular, interstitial and tubular) cells in cattle Bos taurus. ZEITSCHRIFT FUR ZELLFORSCHUNG UND MIKROSKOPISCHE ANATOMIE (VIENNA, AUSTRIA : 1948) 1966; 74:505-28. [PMID: 5988471 DOI: 10.1007/bf00496841] [Citation(s) in RCA: 58] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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