. Quarterly journal of experimental physiology and cognate medical sciences. ^ had just completed division. Many of the alveolar cellsexhibit mitoses, but these do not appear so numerously as in theanimal just described. Zymogen granules are more scanty thannormal. The nucleoli, when visible, are, in Mallory preparations,sometimes blue, sometimes red. Paranuclei are occasionally seen inthe cells which exhibit mitosis. As in the case just described, zymogengranules are scarce in these dividing cells. Zymogen granules are Studies on the Endocrint (JIjukIs 2G9 more abundant in tlie alveoli innned
. Quarterly journal of experimental physiology and cognate medical sciences. ^ had just completed division. Many of the alveolar cellsexhibit mitoses, but these do not appear so numerously as in theanimal just described. Zymogen granules are more scanty thannormal. The nucleoli, when visible, are, in Mallory preparations,sometimes blue, sometimes red. Paranuclei are occasionally seen inthe cells which exhibit mitosis. As in the case just described, zymogengranules are scarce in these dividing cells. Zymogen granules are Studies on the Endocrint (JIjukIs 2G9 more abundant in tlie alveoli innnediately adjacent to the islets ofLan<,aMhans than in more remote alveoli. Tilt. islets themselves show nn fhan^o from the normal. (c) In Thyroidectomised Animal. Xo. 2 rat of C tjroup. Thyroid-fed. Wei<,dit ITOtjrm. Killed forty-one days after thyroidectomy. The intestines are slit,ditly The contents of the largeintestine are soft. The pancreas is of a pinkish YUi. 10.—Section of pancreas of rat (male) which had been subjected to thyroidectomyand subsequently fed with an addition to its ordinary diet of 1 grm. of dry ox-thyroid per diem during seven days. Microphotograph ; magnified 90 diameters. Great variation is noticeable in tlie size of the alveoli, largely due to ditierencesin the amount of zymogen within the cells. Pancreas (figs. 10, 11).—The alveolar cells show a good deal ofdifference in appearance (fig. 10). Their nuclei vary in size from 4/xto lOjUL. The smaller nuclei are placed closely together; the cells towhich these small nuclei belong are smaller than the rest. The largernuclei contain coarsely granular uniformly scattered chromatin, butsome have a large central nucleolus with a tendency for the chromatingranules to be arranged near the periphery of the nucleus. A greaternumber of mitotic figures (fig. 11) are observable than in the sectionsof pancreas of the animal belonging to B group; perhaps as many asin the unoper
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Keywords: ., bookcentury1900, bookdecade1900, bookidqua, booksubjectphysiology
