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The results of earliest removal of the thymus glands in Rana pipiens tadpoles

โœ Scribed by Allen, Bennet M.


Publisher
John Wiley and Sons
Year
1920
Tongue
English
Weight
671 KB
Volume
30
Category
Article
ISSN
0022-104X

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## ONE PLATE AND TWO CHARTS This problem was worked out in the laboratory of the Zoology Department of the University of Kansas under the direction of Dr. B. M. Allen in connection with other problems concerning the experimental removal of glands of internal secretion from Rana pipiens. Due credit

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## 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