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Qualitative changes in DNA-like RNA during development in Rana pipiens

โœ Scribed by R.F. Greene; R.A. Flickinger

Book ID
115743985
Publisher
Elsevier Science
Year
1970
Weight
831 KB
Volume
217
Category
Article
ISSN
0005-2787

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โœ H. W. Beams; R. L. King ๐Ÿ“‚ Article ๐Ÿ“… 1938 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 657 KB

## Abstract Centrifuging the eggs of Rana pipiens in the early gastrula stage prevents the formation of the hypophysis in some of the tadpoles. The absence of the melanophorotropic hormone normally secreted by the hypophysis seems to be responsible for the contraction of the pigment cells. In addit