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Journal of Experimental Biology 1,1-14 (1923)
Published by Company of Biologists 1923

Studies on Internal Secretion II.--Endocrine Activity in Foetal and Embryonic Life

LANCELOT T. HOGBEN 1 and F. A. E. CREW 1

1 Animal Breeding Research Department, The University, Edinburgh

The time at which the foetal thyroid and pituitary glands in sheep and oxen can be shown to contain secretory products as inferred by their action upon amphibian development and colour response conforms to what might be anticipated on histological grounds: neither experimental nor microscopic data provide any justification for attributing the ætiological significance of the monstrous abortive Dexter calf to thyroid deficiency. Preliminary experiments suggest the desirability of using the embryo chick for studying the correspondence between secretory activity and histological structure in the case of the adrenals.






© The Company of Biologists Ltd 1923