【摘要】 本文观察日本血吸虫雄虫睾丸精子发育及支持细胞的超微结构。首次报道血吸虫精子发育及日本血吸虫生殖细胞的结构;精原细胞、精母细胞的特点。根据精细胞的形状、核质浓缩程度、线粒体的分布、顶体样结构的形成、残余体的结集与消失及周身微管的存在等特征,将精细胞分为Sda、Sdb、Sdc、Sdd 4型。它们镶嵌于支持细胞胞质之间,构成十分复杂的画面。文中介绍了顶体样结构及残余体的内容物,并对其由来与性质进行了讨论。更多还原

【Abstract】 This paper deals with the ultrastructural study of the spermatogenesis and sustentacular cell of the testes of Schistosoma japonicum by means of TEM. Albeit several papers have reported on the ultrastructural studies of the testes of male reproductive organ of S. mansoni, no systemic observation on the spermatogenesis of schistosome and ultrastructure of the testes of 5. japonicum was available .The authors described the characteristics of the spermatogonium, spermatocyte and different appearance of spermatids. The latter was subdivided into 4 types, namely, Sda, Sdb, Sdc and Sdd, which could be identified by the features of nuclear shape and the density of matrix, the distribution of the mitochondria in the cytoplasm, the appearing and the formation of the acrosome-like structure, the presentation and elimination of the residual bodies, etc. The spermatids were embedded and interdigitated among the sustentacular cells, forming a complicated picture in the field of TEM. The acrosome-like structure and the inclusion of residual bodies were revealed in developing spermatids. The origin and the characteristics of these structures were discussed.更多还原