Lectin histochemistry of the interdigital gland in the Japanese serow (Capricornis crispus) in winter.

Abstract

The interdigital gland of the Japanese serow was examined by histological and lectin histochemical techniques. The gland is composed of a thin-walled pouch and a duct. Both regions contain sebaceous and apocrine glands, but the development of each component was significantly less marked than those of the skin in the region. In particular, only a small amount of sebaceous and apocrine glandular elements was found in the pouch, although they were more abundant in the duct. Histochemical staining of the sebaceous and apocrine glands showed similar reactions to six lectins except for UEA in the interdigital gland and digital surface skin. UEA reacted with the apocrine part of the interdigital gland, but not with the gland in the digital surface skin. In addition, tubules in the apocrine gland revealed eight different staining patterns with UEA. These stainings possibly represent a cyclic activity of glandular tubules and suggest that the apocrine portion of the interdigital gland has a different function from that of the body skin.

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