A temperature-jump study of the reaction between azurin and cytochrome c-551 from Pseudomonas aeruginosa

Temperature-jump studies on the electron-transfer reaction between azurin and cytochrome c-551 clearly reveal two chemical relaxations. The amplitudes of these relaxation processes have identical spectral distributions, but the relaxation times show different dependences on the reactant concentrations. These findings are discussed in terms of possible models.

Histology of the lacrimal gland in keratoconjunctivitis sicca

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Evaluation of the Dirofilaria immitis filarial skin test antigen in the diagnosis of filariasis

Conflicting opinions on the value of a skin test in the diagnosis of human filariasis emphasized the need for a careful examination of this procedure. The evaluation was made by asking workers in different countries to use an antigen prepared from Dirofilaria immitis in groups of people who could be examined for parasitic infection.In one non-endemic area, repeated tests over a 1-year period did not lead to sensitization, but the reactions of individuals varied from test to test. In endemic areas of filariasis, exposure to infective bites seemed to influence the pattern of skin reactions to a greater degree than did the development of overt infection with Wuchereria bancrofti. No particular size of reaction could be considered indicative of filarial infection.THE VALUE OF THE SKIN TEST WITH THIS ANTIGEN SEEMS LIMITED TO TWO SITUATIONS: (1) a large reaction may help to confirm a clinical diagnosis of filariasis when parasites cannot be found, and (2) the frequency distribution of skin reaction sizes in local populations may help, where blood surveys are impossible, to indicate areas in which some filarial infection is being transmitted.Results of skin test surveys should be expressed as frequency distributions of reaction sizes and negative/positive classification should be avoided.

Note on the terminological confusion surrounding systematic desensitization

Discussions of systematic desensitization have used learning terms loosely. This limits the usefulness of the learning concepts being applied in behavior therapy. It also impedes development of learning theory because of the lack of distinction in these discussions among possible explanations of the extinction effect of systematic desensitization and the arrangement of conditions likely to produce or facilitate such an effect.

Gelatinous Glandular Cysts of the Ovary, and the so-called Pseudomyxoma of the Peritoneum

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Chorionepithelioma following Hydatidiform Mole and giving rise to Intraperitoneal Hæmorrhage from an Extension in the Right Mesosalpinx

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