Titlebook: Biology of Amphibian Tumors; Merle Mizell Book 1969 Springer-Verlag New York Inc. 1969 biology.cancer.cancer research.carcinogenesis.carci

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Soziale Netzwerke und Verständigung If newly hatched chicks are subjected to complete extirpation of the bursa of Fabricius plus near lethal total body irradiation, these chickens grow up as immunological cripples unable to produce demonstrable amounts of circulating antibodies (1, 2). Such chickens lack both of the known immunoglobu

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Kommunikation und Verständigunges employed and on the method of application. Carcinogenesis results in a high percentage of mice when their skins are treated with solutions of polycyclic aromatic hydrocarbons, but much less frequently in rats and rarely in guinea pigs. Only recently have studies been undertaken to try to elucidat

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Vertrauen und Public Relations,rger (1) reviewed the problem of neoplasia in cold-blooded vertebrates and concluded that amphibians are no less susceptible to neoplasms than other vertebrates. Recent studies have vastly expanded our knowledge of some of these tumors, especially renal cell carcinoma in the frog (2–6) and lymphosar

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,Vertrauen und Glaubwürdigkeit im Text,Spontaneous and transplanted melanoma, identical in structure, consisted of melanophores, black pigment cells. The spontaneous teratoma consisted of tissues derived from all three embryonic layers. Its most significant cells were epithelial, partly organized in gland-like structures. Mitosis was obs

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https://doi.org/10.1007/978-3-658-25268-7ve review published in 1962 Balls (1) was able to include only a single case, that of a carcinoma in . reported by Pick and Poll (2). In view of this apparent scarcity of neoplasms in the amphibian testis, it is rather remarkable that 16 have been found in Mexican axolotls of the writer’s colony. Th

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Recent Results in Cancer Researchhttp://image.papertrans.cn/b/image/187677.jpg

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Dependence of Tumor Formation in Frogs on Abnormal Nucleolar Functionalled virus tumor by an . reagent. A related cytological study of DNA and RNA inhibitory effects on nucleoli and ribosomes by several Actinomycins and Puromycin was also begun. These preliminary experiments in frogs are reported for the first time in this paper.

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Immunologic Tolerance and Blood Cell Chimerism in Experimentally Produced Parabiotic Frogsarate births. On the other hand, grafts exchanged between one-egg twins should behave as autografts and survive indefinitely. It came therefore as a curious surprise when these investigators found that dizygotic cattle twins freely accept skin grafts from each other, even when the twin pairs are of unlike sex.