Ref ID : 4260
Pilar Delgado, Purificacion Calvo, and Antonio Torres; Encystment in the Hypotrichous Ciliate Paraurostlya weissei: Ultrastructure and Cytochemistry. J.Protozool. 34(1):104-110, 1987
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The cyst wall of Paraurostyla weissei consists of four morphologically distinct layers. It shows an ultrastructure and composition similar to that of the previously described kinetosome-resorbing cysts, and its cytoplasm displays characteristics of "urostylid-type" cysts. Therefore it is possible to consider it a "transition ciliate" between Stichotrichina and Sporadotrichina.