Pathologic lesions in the nervous system of the duck fed a ration deficient in vitamin A.
D000818:Animals; D059001:Aquatic Organisms; D004372:Ducks; D006801:Humans; D009420:Nervous System / Q000473:pathology*; D014801:Vitamin A; D014802:Vitamin A Deficiency
D014801:Vitamin A
NERVOUS SYSTEM/pathology; VITAMIN A DEFICIENCY