title: Bracken poisoning: a theory.
mesh_terms: D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000209:etiology*; D010939:Plant Poisoning / Q000662:veterinary*; D013326:Strontium Radioisotopes / Q000009:adverse effects*
chemical_list: D013326:Strontium Radioisotopes