CYTOLOGIC AND HISTOLOGIC OBSERVATIONS ON THE EPITHELIAL, CONNECTIVE AND VASCULAR TISSUES OF THE ENDOMETRIUM OF MACAQUES UNDER VARIOUS EXPERIMENTAL CONDITIONS11

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Abstract
This study revealed a difference in the character of endometrial tissues from castrated and untreated macaques which, from the evidence at hand, appeared to depend upon the type of structure in the ovary at the time of castration. The study likewise revealed that there were two spongioplastic networks in the cytoplasm of gland epithelial cells in the endometrium of castrated macaques under the influence of the ovarian hormones. In castrated and untreated macaques the smooth muscle cells of the arterioles had undergone an acidophilic hyalinization that was not seen in the endometrium of castrated macaques treated with the ovarian hormones. In tissues from animals treated with both estrogen and progesterone, the cytoplasm of the endothelium was more abundant, more dense and more heavily stained than it was in tissues from animals receiving estrogen alone.