钉螺肝脏的光镜和电镜观察

摘要

对湖北钉螺指名亚种(Oncomelania hupensis hupensis)肝脏的显微和超微结构作了较详细的研究。肝腺管壁由单层柱状上皮细胞构成。上皮细胞内，粗面内质网呈多层次板层状，主要分布于核周围，线粒体有椭圆、杆状两种形态，核上方有高尔基复合体并多有溶酶体出现。胞质中分泌颗粒分为四种，细胞基部的颗粒电子密度很高，中部有巨大颗粒，近细胞游离端的大、中、小分泌颗粒可连同胞质一起排放入腺管腔。在肝脏间质中的网状细胞多呈三角形状，有血细胞团和毛细血管腔构造。%We studied the micro and ultramicro hepatical structure of Oncomelania snails. The results showed that the hepatical glandulous tubes were composed of simple columnar epithelis and cellular polarity was quite strong, cellular organs were well developed, rough endoplasma recticulium distributed around cellular nucleus in the shape of polylayer and platelayer. The shape of mitochondrion had ellipse and rhabditi form, and Golgi's body and lysosome were in the upper of the nucleus. There were four kinds of secretory granules in the cytoplasma granules high electron density in the base of cell, macro granules in the middle, large and small granules which could release into glandulous tube together with cytoplasma near by the free end; skein cells were simillar to triangle and there are blood cells and capillary cave seen in the hepatical interstice.