title: Late occurrence of K-ras gene mutations in the pathogenesis of squamous cell carcinoma of the lung: analysis in sputum.
authors.forename: Z
authors.initials: Z
authors.lastname: Zhang
authors.forename: M
authors.initials: M
authors.lastname: Nakamura
authors.forename: E
authors.initials: E
authors.lastname: Taniguchi
authors.forename: L
authors.initials: L
authors.lastname: Shan
authors.forename: T
authors.initials: T
authors.lastname: Yokoi
authors.forename: K
authors.initials: K
authors.lastname: Kakudo
mesh_terms: D002294:Carcinoma, Squamous Cell / Q000235:genetics* / Q000473:pathology; D004273:DNA, Neoplasm / Q000032:analysis*; D011905:Genes, ras; D006801:Humans; D008175:Lung Neoplasms / Q000235:genetics* / Q000473:pathology; D016296:Mutagenesis; D013183:Sputum
chemical_list: D004273:DNA, Neoplasm