Excerpt from Uterus and Embryo: I. Rabbit; II. Man The blood-vessels show increased hypertrophy of their epithelium, and the perivascular cells form two or three layers around them; they are especially remarkable for containing a very large number of multinucleate leucocytes and comparatively few red corpuscles. The excessive abundance of white globules continues up to the Oldest stage I have examined (sixteenth day). The predominance of nucleated corpuscles causes the contents Of the maternal vessels to resemble foetal ...
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Excerpt from Uterus and Embryo: I. Rabbit; II. Man The blood-vessels show increased hypertrophy of their epithelium, and the perivascular cells form two or three layers around them; they are especially remarkable for containing a very large number of multinucleate leucocytes and comparatively few red corpuscles. The excessive abundance of white globules continues up to the Oldest stage I have examined (sixteenth day). The predominance of nucleated corpuscles causes the contents Of the maternal vessels to resemble foetal blood when examined with a low power; with high magnifications the dif ference is evident. To the foetal blood in the placenta we shall have to recur. 7. Uterus at eleven days and three hours.-very great changes have taken place so great that they cannot be under stood completely until some of the intermediate phases are studied. Want Of suitable material has hitherto prevented my doing this. At the present stage - the beginning Of the twelfth day - the placenta is distinctly pedunculate, and there is consequently a circular cleft between its sides and the closely adjacent peri - placenta; in the middle of the placenta a deep fissure corresponds, of course, to the space between the two folds of the uterus, out of which the placenta is developed, and therefore runs lengthwise of the uterus. The allantois has ac quired considerable size and is attached to the surface of the placenta, from which the ectoderm has disappeared. The glands of the placenta are very far degenerated and altered 1n the sub-glandular zone the multinucleate cells have appeared, and in the outer zone the perivascular cells have increased so as to occupy nearly all the space between the vessels. In the peri placental and ob-placental regions, the modifications are equally noteworthy. Such, in brief, are the more striking changes. Let us consider them with greater detail. The diagram on P1. XXIX. Will enable the reader to follow the ensuing descriptions. The general explanation of the diagram is given in the next section. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at ... 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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