title: How do we know what causes cancer.
mesh_terms: D000818:Animals; D002274:Carcinogens, Environmental; D004247:DNA; D004195:Disease Models, Animal; D004353:Drug Evaluation, Preclinical / Q000379:methods*; D006801:Humans; D009153:Mutagens; D009369:Neoplasms / Q000139:chemically induced*; D012486:Salmonella typhimurium / Q000187:drug effects
chemical_list: D002274:Carcinogens, Environmental; D009153:Mutagens; D004247:DNA