The induction of neoplasms of the urinary bladder of the cow and the small intestine of the rat by feeding bracken fern (Pteris aquilina).
D000230:Adenocarcinoma / Q000139:chemically induced*; D000821:Animal Feed; D000818:Animals; D002295:Carcinoma, Transitional Cell / Q000139:chemically induced*; D002417:Cattle; D006391:Hemangioma / Q000139:chemically induced*; D007414:Intestinal Neoplasms / Q000139:chemically induced*; D010212:Papilloma / Q000139:chemically induced*; D010944:Plants; D001749:Urinary Bladder Neoplasms / Q000139:chemically induced* / Q000662:veterinary