title: Studies on the acrosome. X. Differentiation of the starfish acrosome.
mesh_terms: D000818:Animals; D002454:Cell Differentiation; D008297:Male; D008854:Microscopy, Electron; D013091:Spermatogenesis; D013094:Spermatozoa / Q000166:cytology*; D013215:Starfish / Q000166:cytology*