Abstract
AbstractPara‐anal organs of nine specimens of the rare, Southeast Asian bat Eonycteris spelaea were studied in serial sections by light microscopy. Parenchymal tissue of the organs consists of solid cords of cells budded from the naked epidermis without association with hair follicles. Cytological characteristics and cytomorphosis of para‐anal gland cells differ markedly from those of typical sebaceous glands in adjacent haired skin, and the phases of growth, differentiation and secretion appear to be segregated in time. Nevertheless, holocrine secretory activity and a sebum‐like secretion occur in this highly specialized sebaceous organ. Although found in both sexes, it is larger in adults, in males as compared with females, and in reproductively more active males as compared with males of the same size but with smaller testes.
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