Intranuclear microtubules.
Intranuclear microtubules are a regular feature of spermatocyte meiosis in a crane fly (Nephrotoma suturalis Loew).
D002455:Cell Division; D003593:Cytoplasm / Q000166:cytology*; D004175:Diptera; D008297:Male; D008854:Microscopy, Electron; D013094:Spermatozoa / Q000166:cytology*