Induction of Triploidy and Haploidy in the Newt, Triturus Viridescens, by Cold Treatment of Unsegmented Eggs
نویسندگان
چکیده
منابع مشابه
Induction of accessory limbs and of sarcoma in the Newt (Triturus viridescens) with carcinogenic substances.
Among adult vertebrates, only some of the amphibia are capable of regenerating their limbs. Several years ago experiments were begun in an attempt to induce neoplasia in limb tissues capable of such regeneration. The common newt, Triturus viridescens, was used because of its hardiness and availability. The injection of a variety of supposedly carcinogenic substances into the forelimb of over 50...
متن کاملA Pentaploid Larva of the Newt, Triturus Viridescens.
proportions proceeds differentially in the first or in the second and third dimensions. 1 Castle, W. E., Proc. Nat. Acad. Sci., 10, 19-22 and 181-182 (1924). 2 Sumner, F. B., Ibid., 10, 178-180 (1924). Castle, W. E., Carnegie Inst. Pubi., No. 320 (1922). 'Cohen, J. I., Nature, 144 944 (1939). Cohen, J. I., J. Mental Science, 86, No. 362 (1940). 6 Pearl, R., Constitution and Health, London, Kega...
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this study investigates the cohesive devices used in the textbook of english for the students of psychology. the research questions and hypotheses in the present study are based on what frequency and distribution of grammatical and lexical cohesive devices are. then, to answer the questions all grammatical and lexical cohesive devices in reading comprehension passages from 6 units of 21units th...
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15 صفحه اولImmunochemical studies of muscle proteins in mature and regenerating limbs of the adult newt, Triturus viridescens.
QUALITATIVE and quantitative changes which occur in proteins and other macromolecules during differentiation and growth in embryonic development may be detected and defined by immunochemical means (Ebert, 1954, 1959). Similar changes must also occur during regeneration of a part, such as the limb of the salamander, since, after an initial period of cellular breakdown and 'dedifferentiation', re...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1939
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.25.5.233