Jonas L, Richter W, Meyer H W
Abteilung Elektronenmikroskopisches Zentrum der Wilhelm-Pieck-Universität Rostock, DDR.
Anat Anz. 1988;165(1):23-33.
The flask cells of the nephron and the parietal cells in the stomach fundic glands of claw-frog show some structural similarities such as the existence of a canalicular system, the richness of mitochondria and numerous small cytoplasmatic vesicles. Both cell types also seem to have common functional pecularities. With the freeze-fracture method the cell membranes of both cell types showed a richness of intramembrane particles (IMPs) and the existence of special elongated IMPs especially in the apical and canalicular cell membranes. In the flask cells the elongated so-called rod-shaped IMPs measured 29 X 13 nm and were very numerous, whereas the corresponding particles in the parietal cells in the same membranes were smaller (13 X 5 nm) and not so numerous. The similarities and differences between the membranes of both cell types are discussed in relation to the cell function.
爪蟾肾单位的烧瓶状细胞和胃底腺的壁细胞显示出一些结构上的相似性，如存在小管系统、丰富的线粒体和众多小的细胞质囊泡。这两种细胞类型似乎也有共同的功能特性。用冷冻蚀刻法观察，这两种细胞类型的细胞膜都显示出丰富的膜内颗粒（IMPs），特别是在顶端和小管细胞膜中存在特殊的细长型IMPs。在烧瓶状细胞中，所谓的杆状IMPs长29×13纳米，数量很多，而同一细胞膜壁细胞中的相应颗粒较小（13×5纳米），数量也没那么多。结合细胞功能对这两种细胞类型细胞膜之间的异同进行了讨论。
