title: Embryonic development of the glossiphoniid leech Theromyzon rude: characterization of developmental stages.
mesh_terms: D000818:Animals; D001757:Blastomeres / Q000166:cytology; D002455:Cell Division; D002970:Cleavage Stage, Ovum / Q000166:cytology; D007422:Intestines / Q000196:embryology; D007865:Leeches / Q000196:embryology*; D009420:Nervous System / Q000196:embryology*