title: Bladder cancer etiology and natural carcinogens.
mesh_terms: D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000209:etiology; D005260:Female; D006801:Humans; D008297:Male; D010947:Plants, Toxic; D011736:Pyridoxine; D012552:Schistosomiasis / Q000150:complications; D012907:Smoking / Q000150:complications; D014364:Tryptophan / Q000378:metabolism; D001749:Urinary Bladder Neoplasms / Q000209:etiology* / Q000662:veterinary; D026681:Vitamin B 6 Deficiency
chemical_list: D014364:Tryptophan; D011736:Pyridoxine