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- W2165294924 abstract "Summary. The epididymis of the European mole (Talpa europaea) was studied by light and electron microscopy. In the sexually active animal, spermatozoa mature during their passage through the epididymis and the structure of the cells lining the duct suggests a clear regional division into initial, middle and terminal segments. Numerous intra-epithelial vesicles were present in the distal part of the middle segment of sexually active moles and the lining epithelium in the terminal segment appeared to be secretory. Variation in the sensitivity of different regions of the epididymis to androgens was apparent : the principal cells of the initial segment were morphologically active only during the peak of the breeding season in spring, while the cells of the terminal segment became active earlier and remained so for longer. During sexual regression, many autophagic vacuoles were found in the principal cells, and these became transformed into lipofuscin pigment granules. Cells heavily laden with these granules appeared concurrently in the lining epithelium. It is suggested that such cells may be involved in the regression of principal cells by means of heterophagic activity. A similar situation was also observed, but to a lesser extent, at the beginning of the breeding season. Outside the breeding season, the organelles of the principal cells were poorly developed throughout the epididymis, and lipofuscin pigment granules remained in the principal and basal cells of adults. Such granules were seldom seen in immature animals." @default.
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- W2165294924 date "1976-05-01" @default.
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- W2165294924 title "Fine structural changes in the epididymal epithelium of moles (Talpa europaea) throughout the year" @default.
- W2165294924 doi "https://doi.org/10.1530/jrf.0.0470047" @default.
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