日本血吸虫成虫体壁与肠道的透射电镜观察

OBSERVATION OF TEGUMENT AND CAECUM OF ADULT SCHISTOSOMA JAPONICUM BY TRANSMISSION ELECTRON MICROSCOPY

本文应用透射电镜较详细地观察比较大陆品系日本血吸虫成虫与宿主界面一体壁与肠道的超微结构特征:雄虫体壁的外伸内陷程度较雌虫为甚,不同部位体壁的超微结构特征显然不同;雄、雌虫的肠道均由单层柱状上皮细胞组成,不同肠段的微细结构却不相同;体壁与肠上皮细胞的形态学比较结果表明,肠合胞体具有消化吸收和胞饮等生理功能,而体壁则具吸收和保护功能。

The ultrastructrual features of tegument and caecum of Chinese mainland strain S. japonicum abult were studied by transmission electron microscopy. l.The tegumental surface folds and pits of male worms are more obvious than those of female worms, and ultrastructural difference was also detected in various regions of the tegumental surface. 2.The gut of male and female worms consists of a single-layered columnar epithelial cell surrounded by a thin muscle layer, but the ultrastructural differences are found between different regions of the gut. 3.The comparative study of the tegument and the caecal epithelium has shown that in function the caecal syncytium appears to be responsible for the digestion and absorption, while the tegument is responsible for both absorption and defence.