Krzysztofowicz A, Kuzyk S
Acta Biol Acad Sci Hung. 1979;30(1):121-39.
The pyloric region in the alimentary tract of Tetrodontophora bielanensis consists of three parts, of which the first (P1) belongs to the midgut and the others (P2, P3) to the hindgut. Behind the pyloric region in the hindgut, sphincter (S), rectum (R1, R2) and rectal ampulla (AR) follow. Morphologically, the cells of part P1 differ in structure from the midgut epithelial cells described by Kazysztofowicz et al. [11], both by presence of microtubular bodies in an apical region and by the lack of the mitochondrial region. The cytoplasm of the cells of part P3 is filled with lysosome-like bodies with an unknown function. The authors suggest that they are connected with a secretion of the pheromons. The structure of rectum epithelial cells is typical of insects.
比氏四齿线虫消化道中的幽门区域由三部分组成，其中第一部分（P1）属于中肠，其他部分（P2、P3）属于后肠。在后肠的幽门区域之后，依次是括约肌（S）、直肠（R1、R2）和直肠壶腹（AR）。在形态学上，P1部分的细胞结构与Kazysztofowicz等人[11]描述的中肠上皮细胞不同，这既体现在顶端区域存在微管体，也体现在缺乏线粒体区域。P3部分细胞的细胞质充满了功能未知的溶酶体样小体。作者认为它们与信息素的分泌有关。直肠上皮细胞的结构是昆虫的典型结构。
