Structure of the Excretory System of the Plerocercoid Pyramicocephalus phocarum (Cestoda: Diphyllobothriidea): Proof for the Existence of Independent Terminal Cellsстатья
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Дата последнего поиска статьи во внешних источниках: 23 сентября 2021 г.
Аннотация:The excretory system ultrastructure and immunocytochemistry have been investigated in theplerocercoid Pyramicocephalus phocarum. It has been shown that P. phocarum has independent terminal cells,cyrtocytes. The entire canal system is a single undivided syncytium, which includes nephridial funnels of theterminal tubules, and peripheral and central canals. The nephridial funnel and cyrtocyte form a filtrationcomplex of the protonephridial type. In the caudal region, several peripheral canals open into a deep fold ofthe tegument, the urinary bladder. The excretory pores are separated from the tegument by annular septatedesmosomes. There are no cell junctions inside the excretory system. The presence of the F-actin ring andthe expression of non-synaptic serotonin in the collar area have been detected in cyrtocytes by immunocytochemistry methods.