title: [Convergence of the cyst in cysticercoids (Cestoda, Hymenolepidata) and the tegument in cystacanths (Acanthocephala)].
abstract: It was shown that despite fundamental differences in the organization of the tegument of cystacanths and the cyst wall of cysticeroids, they have a number of features similar in localization, morphology, terms of formation, and functional value. These include a powerful outer layer of glycocalyx on the surface of the tegument, filling of the distal department with dense substance, and the presence of complicated fibrillar systems. It is supposed that the nature of these particularities is convergent and is determined by the similarity of the life cycles of Hymenolepidata and Acanthocephala.
authors.forename: V P
authors.initials: VP
authors.lastname: Nikishin
mesh_terms: D000049:Acanthocephala / Q000254:growth & development / Q000502:physiology / Q000648:ultrastructure*; D000818:Animals; D002589:Cestoda / Q000254:growth & development / Q000502:physiology / Q000648:ultrastructure*; D008854:Microscopy, Electron; D009024:Morphogenesis