Reader T A
Z Parasitenkd. 1976 Jul 27;50(1):11-30. doi: 10.1007/BF00389928.
The structure and function of the digestive gland of the gastropod mollusc, Bithynia tentaculata, was investigated using ultrastructural, histochemical, and cytochemical techniques. The digestive gland was shown to be composed of two main cell types, the "digestive" cells and "secretory" cells. The digestive cells appeared to be concerned with the absorption and digestion of nutrients, while secretory cells produced digestive enzymes and calcareous concretions. Undifferentiated cells were scattered between these two main cell types. The pathological effects of larval digeneans on the digestive gland were also investigated, at the ultrastructural level. In such infected snails the digestive gland appeared to be degenerating. The significance of this tissue destruction was briefly discussed.
利用超微结构、组织化学和细胞化学技术，对腹足纲软体动物——小土蜗的消化腺结构和功能进行了研究。结果表明，消化腺由两种主要细胞类型组成，即“消化”细胞和“分泌”细胞。消化细胞似乎与营养物质的吸收和消化有关，而分泌细胞则产生消化酶和钙质凝结物。未分化细胞散布在这两种主要细胞类型之间。还在超微结构水平上研究了幼虫复殖吸虫对消化腺的病理影响。在这类受感染的蜗牛中，消化腺似乎正在退化。简要讨论了这种组织破坏的意义。
