Ultrastructural observations on spermiogenesis in the cave cricket Ceuthophilus secretus (Scudder).
D000818:Animals; D002467:Cell Nucleus; D004721:Endoplasmic Reticulum; D007313:Insecta; D008297:Male; D008854:Microscopy, Electron; D013094:Spermatozoa / Q000166:cytology* / Q000254:growth & development*