The ultrastructure of spermatogonia in Hanseniella nivea (Symphyla, Myriapoda).
D000818:Animals; D001181:Arthropods / Q000648:ultrastructure*; D008297:Male; D008854:Microscopy, Electron; D013093:Spermatogonia / Q000648:ultrastructure*; D013094:Spermatozoa / Q000648:ultrastructure*