title: Multiple steps in carcinogenesis, multiple carcinogenic factors, and multiple primary tumors: can we develop an appropriate response for cancer prevention?
authors.affiliation: National Cancer Center, Tokyo, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Nagao
authors.forename: T
authors.initials: T
authors.lastname: Sugimura
mesh_terms: D000818:Animals; D015197:Carcinogenicity Tests / Q000379:methods; D002273:Carcinogens / Q000009:adverse effects*; D006801:Humans; D009152:Mutagenicity Tests / Q000379:methods; D009153:Mutagens / Q000009:adverse effects; D009369:Neoplasms / Q000209:etiology* / Q000235:genetics / Q000517:prevention & control; D009374:Neoplasms, Experimental / Q000209:etiology / Q000235:genetics / Q000517:prevention & control; D009378:Neoplasms, Multiple Primary / Q000209:etiology* / Q000235:genetics / Q000517:prevention & control
chemical_list: D002273:Carcinogens; D009153:Mutagens