title: Some ultrastructural aspects of organization of the gametogenic system in man.
mesh_terms: D002465:Cell Movement; D006801:Humans; D008297:Male; D008854:Microscopy, Electron; D013090:Spermatocytes / Q000502:physiology / Q000648:ultrastructure*; D013094:Spermatozoa / Q000648:ultrastructure*; D013737:Testis / Q000648:ultrastructure*