title: Spermiogenesis in the enchytraeid Lumbricillus rivalis (Oligochaeta: Annelida).
mesh_terms: D000177:Acrosome / Q000648:ultrastructure; D000818:Animals; D000845:Annelida / Q000166:cytology*; D002467:Cell Nucleus / Q000648:ultrastructure; D008297:Male; D008928:Mitochondria / Q000648:ultrastructure; D009835:Oligochaeta / Q000166:cytology*; D013082:Sperm Tail / Q000648:ultrastructure; D013091:Spermatogenesis; D013094:Spermatozoa / Q000166:cytology / Q000648:ultrastructure*