In an E.M. analysis of the rat oviduct the authors report the morphology of the so-called indifferent basal cells and peg cells. The hallmark of the former are desmosomes and clear cytoplasm; these elements may detach themselves from the basal membrane, migrating towards the lumen and showing prominent ciliogenesis. Peg cells appear to be the morphological image of necrobiotic cells, either ciliatd or secretory.
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