东方杯叶吸虫体被的超微结构

扫描电镜显示东方杯叶吸虫体被有许多族生棘,具纤毛乳突和无纤毛窝状乳突,附着器皮层特化为微毛。透射电镜观察表明,皮层是由合胞体、基膜和肌肉层组成,合胞体通过细胞通道与皮层细胞相连。文中详细描述了这些结构,揭示无纤毛窝状乳突为腺乳突,皮层细胞间存在线粒体细胞和附着器皮层形成微毛,探讨了这些结构的生理功能。体外培养成虫皮层结构的某些不正常变化,如皮层细胞的空虚松散,可作为评价吸虫体外培养的一种指标。

ULTRASTRUCTURAL STUDIES OF THE TEGUMENTOF Cyathocotyle orientalis

The tegumentary ultrastructure of Cyathocotyle oricntalis has been described. Scanning electron microscopy shows clustered spines, ciliated papilla and non-ciliated pit-like papilla on the tegumental surface. The tegument of the holdfast is elevated into microvilli. In the transmission electron the tegument consists of a surface syncytium connected by protoplasmic strands to the cell bodies which lay below the peripheral musulature. Two types (T-1, T-2) of secretory bodies are presented in the syncytium and synthesized in the same tegumental cells. The mitochondria cells are found among the tegumental cells. The holdfast surface consists of an outer membrane elevated into microvilli and inner, fibrous basement membrane perforated by the apertures of the common ducts from the secretory cells. TEM also reveals that nonciliated pit-like papilla is glandular papilla. The tegumental ultrastructure of adult cultivated in vitro has an abnormal appearance and contains areas of vacuolation. The function of some important structures and usefulness of ultrastructural techniques to assess cultivation methods has been discussed.