201
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Engle RL, Flehinger BJ, Allen S, Friedman R, Lipkin M, Davis BJ, Leveridge LL. HEME: a computer aid to diagnosis of hematologic disease. BULLETIN OF THE NEW YORK ACADEMY OF MEDICINE 1976; 52:584-600. [PMID: 776294 PMCID: PMC1807196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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202
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203
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Augenlicht LH, Lipkin M. Appearance of rapidly labeled, high molecular weight RNA in nuclear ribonucleoprotein. Release from chromatin and association with protein. J Biol Chem 1976; 251:2592-9. [PMID: 1262336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Chromatin and nuclear ribonucleoprotein (nRNP) have been prepared from a human carcinoma cell line. Following a 1-hour (3H)uridine pulse, 60 to 70% of the nuclear radioactivity, after removal of nucleoli, was found in the chromatin, the balance in nRNP. This was true whether the chromatin and nRNP were separated by velocity centrifugation or by isopycnic centrifugation on Metrizamide gradients. Radioactivity in chromatin and nRNP was found in high molecular weight RNA, with mean sedimentation coefficients of 20 S and 15 S, respectively, as determined on sodium dodecyl sulfate-sucrose gradients. Experiments on the kinetics of appearance of radioactivity in the RNA of the two fractions suggest that some of the chromatin-associated RNA is precursor to nRNP-RNA. The proteins of nRNP are complex as revealed by sodium dodecyl sulfate gel electrophoresis. The contamination by chromatin protein was estimated to be 5%. Experiments involving short pulses of (3H)tryptophan, and pulse-chase, suggested that the rapidly turning over proteins of nRNP were not complexed with RNA while still associated with chromatin. However, it was also shown that the radioactivity in nRNP following short pulses of (3H)tryptophan did not correspond to the major bands seen on stained sodium dodecyl sulfate gels. It is therefore concluded that the protein of nRNP consists of two classes: species present in large amounts, possibly common to all RNA in nRNP, which are relatively stable and may be complexed to RNA still associated with chromatin; and a large number of rapidly turning over species, each present in small amounts and associated with nRNP only after its release from chromatin.
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204
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Augenlicht LH, Lipkin M. Appearance of rapidly labeled, high molecular weight RNA in nuclear ribonucleoprotein. Release from chromatin and association with protein. J Biol Chem 1976. [DOI: 10.1016/s0021-9258(17)33528-7] [Citation(s) in RCA: 34] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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205
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Lipkin M. Quality of care assessment in the light of the relation between doctor and patient. BULLETIN OF THE NEW YORK ACADEMY OF MEDICINE 1976; 52:9-15. [PMID: 1060500 PMCID: PMC1807183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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206
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Abstract
Man and laboratory rodents exposed to chemical carcinogens both show changes in growth characteristics of colonic epithelial cells during neoplastic transformation. Progressive phases of abnormal cell development appear in colonic epithelial cells which gain an increased ability to proliferate and accumulate in the mucosa. These phases in the expression of neoplastic transformation of colonic cells are best defined in the dominant inherited disease of man as adenomatosis of the colon and rectum. Individuals with inherited adenomatosis and those in lesser risk categories can be classified by cell phenotype based on changes in the proliferation and maturation of colonic and other cells. These classifications are leading to new predictive indices which identify heightened degrees of susceptibility of individuals who are at increased risk for colon cancer, and the stage of development of their disease. The indices also are being used to study the contribution of specific elements in the enviroment that modify or accelerate the progression of disease.
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207
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Abstract
Microautoradiographic measurements of TdR3H incorporation into epithelial cells of colonic biopsies were compared in normal and eight index cases with familial polyposis, an inherited trait characterized by the development of colonic polyps and carcinomas. Colonic epithelial cells normally synthesized DNA synthesis was proliferated in the deeper two-thirds of the crypts, while DNA synthesis was repressed in the upper one-third. Patients with familial polyposis and patients with isolated single polyps incorporated TdR into epithelial cells lining the surfaces of polyps and occasionally into surface cells of intervening flat mucosa. Symptom-free members of polyposis families also demonstrated TdR3H incorporation into surface epithelial cells in biopsies of morphologically flat mucosa. The findings indicate similar proliferative behavior of epithelial cells in the formation of all adenomas, be they single isolated polyps or multiple familial adenomatous polyps. A sequence of changes occurs involving a loss of the cells' ability to repress DNA synthesis and the appearance of cells with persistent DNA synthesis at the surface and along the upper portion of colonic crypts. These defects are focal and widespread in the colonic mucosa of those with familial polyposis and are expressed at early age.
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208
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Lipkin M, LePage GA. Section meeting on molecular pharmacologic methods for screening new chemotherapeutic agents for large-bowel cancer. THE AMERICAN JOURNAL OF DIGESTIVE DISEASES 1974; 19:1062-3. [PMID: 4421441 DOI: 10.1007/bf01255792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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209
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Lipkin M. Section meeting on cell kinetics and molecular control of normal, preneoplastic, and neoplastic colon cells. THE AMERICAN JOURNAL OF DIGESTIVE DISEASES 1974; 19:1054-5. [PMID: 4421439 DOI: 10.1007/bf01255790] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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210
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Powell D, Lipkin M, Milligan W. Concomitant changes in classically conditioned heart rate and corneoretinal potential discrimination in the rabbit (Oryctolagus cuniculus). LEARNING AND MOTIVATION 1974. [DOI: 10.1016/0023-9690(74)90009-5] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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211
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Lipkin M. Proliferative changes in the colon. THE AMERICAN JOURNAL OF DIGESTIVE DISEASES 1974; 19:1029-32. [PMID: 4421193 DOI: 10.1007/bf01255785] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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212
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213
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Schmidt M, Lipkin M. Separation of proliferative and mature cells in stomach, jejunum and colon of rat. PROCEEDINGS OF THE SOCIETY FOR EXPERIMENTAL BIOLOGY AND MEDICINE. SOCIETY FOR EXPERIMENTAL BIOLOGY AND MEDICINE (NEW YORK, N.Y.) 1974; 146:836-9. [PMID: 4601468 DOI: 10.3181/00379727-146-38201] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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214
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Kopelovich L, Nisselbaum JS, Lipkin M. The kinetics of synthesis and degradation of aspartate aminotransferase isozymes in rat peripheral red blood cells during cytodifferentiation. PROCEEDINGS OF THE SOCIETY FOR EXPERIMENTAL BIOLOGY AND MEDICINE. SOCIETY FOR EXPERIMENTAL BIOLOGY AND MEDICINE (NEW YORK, N.Y.) 1974; 145:504-7. [PMID: 4205287 DOI: 10.3181/00379727-145-37840] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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215
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216
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Thurnherr N, Deschner EE, Stonehill EH, Lipkin M. Induction of adenocarcinomas of the colon in mice by weekly injections of 1,2-dimethylhydrazine. Cancer Res 1973; 33:940-5. [PMID: 4703125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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217
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Lipkin M. [Recent findings in gastrointestinal cancer (author's transl)]. LEBER, MAGEN, DARM 1973; 3:49-53. [PMID: 4593988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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218
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219
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Lipkin M. The hospital as a community facility: the medical staff and the hospital. BULLETIN OF THE NEW YORK ACADEMY OF MEDICINE 1972; 48:1396-9. [PMID: 4509798 PMCID: PMC1806961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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220
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Lipkin M. Gastric cell regeneration. ARCHIVES FRANCAISES DES MALADIES DE L'APPAREIL DIGESTIF 1972; 61:691-3. [PMID: 4661078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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221
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Deschner EE, Winawer SJ, Lipkin M. Patterns of nucleic acid and protein synthesis in normal human gastric mucosa and atrophic gastritis. J Natl Cancer Inst 1972; 48:1567-74. [PMID: 5056249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
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222
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223
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224
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Deschner E, Lipkin M. Proliferation and differentiation of gastrointestinal cells in relation to therapy. Med Clin North Am 1971; 55:601-12. [PMID: 4930458 DOI: 10.1016/s0025-7125(16)32505-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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225
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Troncale F, Hertz R, Lipkin M. Nucleic acid metabolism in proliferating and differentiating colonic cells of man and in neoplastic lesions of the colon. Cancer Res 1971; 31:463-7. [PMID: 5553691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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226
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Lipkin M. Young Scientists and the AAAS. Science 1970; 170:681. [PMID: 17776331 DOI: 10.1126/science.170.3959.681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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227
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228
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Vanamee P, Winawer SJ, Sherlock P, Sonenberg M, Lipkin M. Decreased incidence of restraint-stress induced gastric erosions in rats treated with bovine growth hormone. PROCEEDINGS OF THE SOCIETY FOR EXPERIMENTAL BIOLOGY AND MEDICINE. SOCIETY FOR EXPERIMENTAL BIOLOGY AND MEDICINE (NEW YORK, N.Y.) 1970; 135:259-62. [PMID: 5479985 DOI: 10.3181/00379727-135-35032] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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229
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Lipkin M, Deschner E, Troncale F. Cell differentiation and the development of colonic neoplasms. Gastroenterology 1970; 59:303-7. [PMID: 5448205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
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230
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Imondi AR, Lipkin M, Balis ME. Enzyme and template stability as regulatory mechanisms in differentiating intestinal epithelial cells. J Biol Chem 1970; 245:2194-8. [PMID: 5442267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
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231
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Lipkin M. Discussion of paper by Dr. George A. Silver: "American medicine: technology outruns social usefulness". BULLETIN OF THE NEW YORK ACADEMY OF MEDICINE 1970; 46:161-6. [PMID: 5263852 PMCID: PMC1749669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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232
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Lipkin M. Latent thumb-sucking--a new chimerical syndrome. PERSPECTIVES IN BIOLOGY AND MEDICINE 1970; 14:96-97. [PMID: 5490764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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233
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Deschner EE, Lipkin M. Study of human rectal epithelial cells in vitro. III. RNA, protein, and DNA synthesis in polyps and adjacent mucosa. J Natl Cancer Inst 1970; 44:175-85. [PMID: 11515029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023] Open
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234
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Imondi AR, Balis ME, Lipkin M. Changes in enzyme levels accompanying differentiation of intestinal epithelial cells. Exp Cell Res 1969; 58:323-30. [PMID: 4327565 DOI: 10.1016/0014-4827(69)90512-6] [Citation(s) in RCA: 89] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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235
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236
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Lipkin M, Engle l JR, Flehinger BJ, Gerstman LJ, Atamer MA. Computer-aided differential diagnosis of hematologic diseases. Ann N Y Acad Sci 1969; 161:670-9. [PMID: 4900292 DOI: 10.1111/j.1749-6632.1969.tb34098.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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237
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Lipkin M. Approaches to the teaching of physical diagnosis. JOURNAL OF MEDICAL EDUCATION 1969; 44:691-697. [PMID: 5820815 DOI: 10.1097/00001888-196908000-00009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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238
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Imondi AR, Balis ME, Lipkin M. Effects of restraint-stress on enzymes involved in DNA synthesis. PROCEEDINGS OF THE SOCIETY FOR EXPERIMENTAL BIOLOGY AND MEDICINE. SOCIETY FOR EXPERIMENTAL BIOLOGY AND MEDICINE (NEW YORK, N.Y.) 1969; 131:376-9. [PMID: 5787113 DOI: 10.3181/00379727-131-33882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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239
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Lipkin M. Cell proliferation in gastrointestinal disease. NATIONAL CANCER INSTITUTE MONOGRAPH 1969; 30:199-207. [PMID: 5361646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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240
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Ludwig WM, Lipkin M. Biochemical and cytological alterations in gastric mucosa of guinea pigs under restraint stress. Gastroenterology 1969; 56:895-902. [PMID: 5782302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
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241
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Winawer SJ, Lipkin M. Cell proliferation kinetics in the gastrointestinal tract of man. IV. Cell renewal in the intestinalized gastric mucosa. J Natl Cancer Inst 1969; 42:9-17. [PMID: 5765227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
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242
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Imondi AR, Balis ME, Lipkin M. Nucleic acid metabolism in the gastrointestinal tract of the mouse during fasting and restraint-stress. Exp Mol Pathol 1968; 9:339-48. [PMID: 4952081 DOI: 10.1016/0014-4800(68)90024-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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243
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Lipkin M. Fee-for-service group practice: Further questions. BULLETIN OF THE NEW YORK ACADEMY OF MEDICINE 1968; 44:1304-1306. [PMID: 19312792 PMCID: PMC1750385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
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244
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Lipkin M, Deschner E. Comparative analysis of cell renewal in the gastrointestinal tract of newborn hamster. Exp Cell Res 1968; 49:1-12. [PMID: 5640692 DOI: 10.1016/0014-4827(68)90513-2] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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245
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Lipkin M. Measurements of cell proliferation. ISRAEL JOURNAL OF MEDICAL SCIENCES 1968; 4:159-63. [PMID: 4873477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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246
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Kim YS, Kerr R, Lipkin M. Cell proliferation during the development of stress erosions in mouse stomach. Nature 1967; 215:1180-1. [PMID: 6061813 DOI: 10.1038/2151180a0] [Citation(s) in RCA: 33] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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247
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Bell B, Almy TP, Lipkin M. Cell proliferation kinetics in the gastrointestinal tract of man. 3. Cell renewal in esophagus, stomach, and jejunum of a patient with treated pernicious anemia. J Natl Cancer Inst 1967; 38:615-28. [PMID: 6025763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
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248
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Bell B, Deschner E, Almy TP, Lipkin M. Patterns of cell proliferation in gastrointestinal disease. Dis Colon Rectum 1967; 10:107-11. [PMID: 6021062 DOI: 10.1007/bf02617356] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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249
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250
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Lipkin M. Newer measurements of cell proliferation in the colon. Gastroenterology 1966; 51:851-4. [PMID: 5923206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
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