Spermiogenesis and ultrastructure of spermatozoon of Nicolla wisniewskii (Digenea, Opecoelidae), an intestinal parasite of Salmo trutta, were studied by electron microscopy. Spermiogenesis follows the ...
A collaborative team of researchers from the National Institute for Basic Biology, the University of Tokyo, and Gunma University in Japan reported that in the liverwort Marchantia polymorpha, the ...