. The endocrine organs; an introduction to the study of internal secretion . ituitary, showing the groups ofoxyphil cells with vascular spaces between the groups. Several vesicles,surrounded by cells, are included in the section. Magnified 400 diameters. are seen between its fibres: they can, in fact, be traced as far as the con-tinuation of the third ventricle into the stalk. This fact was pointed outby Herring, who concluded that the hyaline and granular substances whichare produced by conversion and breaking down of the cells of the parsintermedia form the secretion of this portion of the p
. The endocrine organs; an introduction to the study of internal secretion . ituitary, showing the groups ofoxyphil cells with vascular spaces between the groups. Several vesicles,surrounded by cells, are included in the section. Magnified 400 diameters. are seen between its fibres: they can, in fact, be traced as far as the con-tinuation of the third ventricle into the stalk. This fact was pointed outby Herring, who concluded that the hyaline and granular substances whichare produced by conversion and breaking down of the cells of the parsintermedia form the secretion of this portion of the pituitary, and that thissecretion passes into the cerebro-spinal fluid. In confirmation of Herringsconclusion, evidence that the active principle of the posterior lobe of thepituitary is present in cerebro-spinal fluid has been obtained by Gushingand Goetsch, although their results have been traversed by Carlson. Ithas, however, been shown by Cow that intravenous administration of 6 82 The Endocrine Organs duodenal extract indubitably causes the appearance of the pituitary. ..-.•.
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