. The Biological bulletin. Biology; Zoology; Marine biology. PREGNANCY URINE EXTRACT AND MALE ORGANS 153 cells are not highly secretory, as during seasonal atrophy, the Golgi apparatus is represented only by these osmiophilic granules, and that it is reconstructed from them concurrently with accelerated secretory ac- tivity (Figs. 9 and 10). A similar behavior of the Golgi apparatus has been described by Brambell (1925) in the epithelial cells of the oviduct of the fowl during retarded and accelerated secretion. The Epididymis Following Antuitrin-S Administration.—There is a gradual increase i
. The Biological bulletin. Biology; Zoology; Marine biology. PREGNANCY URINE EXTRACT AND MALE ORGANS 153 cells are not highly secretory, as during seasonal atrophy, the Golgi apparatus is represented only by these osmiophilic granules, and that it is reconstructed from them concurrently with accelerated secretory ac- tivity (Figs. 9 and 10). A similar behavior of the Golgi apparatus has been described by Brambell (1925) in the epithelial cells of the oviduct of the fowl during retarded and accelerated secretion. The Epididymis Following Antuitrin-S Administration.—There is a gradual increase in the number of epithelial cells through mitotic divi- sions. No evidence of amitosis has been observed among these cells as Ludford (1925) described in the mouse epididymis. A few basal cells are present in the epithelium before and after treatment, but these are. Fig. 9. Cross-section of tubules from the epididymis of a control during lowest sexuality. Mann-Kopsch and unstained. Bleached in oil of turpentine for 30 days. X 410. Fig. 10. Cross-section of tubule from an involuted epididymis following treat- ment with Antuitrin-S for 30 days (total 600 r. u.). The epithelial cells are much elongated and Golgi bodies are conspicuous in the supranuclear region. Mann-Kopsch and unstained. Bleached in oil of turpentine for 30 days. X 410. not increased in numbers following the injections. Neither have these been observed in mitotic division at any period. There is no evidence indicating that the cuboidal cells of the involuted epithelium are lost and subsequently replaced through differentiation of basal cells. The columnar cells are frequently observed undergoing mitoses following Antuitrin-S injections. These dividing cells are clearly the columnar cells of the epithelium, as is indicated by the fact that they may advance as far as the metaphase before losing connection with the basement membrane or withdrawing from the luminal margin of the epithelium. In animals that received
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