Fig. 6From: Ultrastructural patterns of the excretory ducts of basal neodermatan groups (Platyhelminthes) and new protonephridial characters of basal cestodesLuminal surface structures of the excretory ducts of basal neodermatans. a Lamellae of the basal monogeneans and aspidogastreans. b Microvilli of gyrocotylideans. c Microvilli of amphilinideansBack to article page