Memoirs Of The Wistar Institute Of Anatomy And Biology V 206

Excerpt from Memoirs of the Wistar Institute of Anatomy and Biology Only within the brief period of four years has the favorable character of the early amphibian tadpole for analyzing the functional nature and the reactions of the members of the endocrine system been recognized. This may indeed seem strange, since the value of this material, to which attention was called by Bom and which has been used so advantageously by Harrison, in the solution of those problems requiring experimental procedure upon the early embryo has long been appreciated. The early amphibian tadpole is peculiarly useful in experimental biological investigations, since in its earliest stages it is available for operation and has the inherent capacity to survive the most severe mutilations. These characteristics make a special appeal in studies upon the functional interrelationships obtaining in the endocrine system, for derangements in this system can be induced by the ablation of certain of its members in their early embryonal and non-functional stages by a simple operation, in itself not harmful. The early removal of a gland will afford then knowledge not only of the essentiality of this gland per se, but also concerning the dependence of the other endocrine organs upon this gland for their full development. This interdependence may be productive of even greater structural changes in the other glands than a later operation would produce, because of the lability inherent in embryonal structures. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

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