title: Comparative fine structure of Cnidaria spermatozoa.
mesh_terms: D000818:Animals; D002467:Cell Nucleus; D003063:Cnidaria / Q000166:cytology* / Q000502:physiology; D005407:Flagella; D008297:Male; D008854:Microscopy, Electron; D008928:Mitochondria; D013045:Species Specificity; D013094:Spermatozoa / Q000166:cytology* / Q000502:physiology