[Demonstration of the secretory cells in the brain of the planarian, Polycelis nigra. Changes in their number during posterior regeneration].
D000818:Animals; D001921:Brain / Q000033:anatomy & histology*; D006376:Helminths / Q000502:physiology*; D010932:Planarians; D010986:Platyhelminths; D012038:Regeneration
BRAIN/anatomy and histology; HELMINTHS/physiology