title: An electron microscope study of spermiogenesis and spermatozoa of Molgula impura and Styela plicata (Ascidiacea, Tunicata).
mesh_terms: D000818:Animals; D008297:Male; D013094:Spermatozoa / Q000648:ultrastructure*; D014561:Urochordata / Q000648:ultrastructure*