The fine structure and arrangement of microcylinders in the lumina of flagellar fibers in cricket spermatids.
D000818:Animals; D005407:Flagella; D007313:Insecta / Q000166:cytology*; D008297:Male; D008854:Microscopy, Electron; D008870:Microtubules; D013094:Spermatozoa / Q000166:cytology*