The multistep nature of cancer development.
D000818:Animals; D002273:Carcinogens; D002471:Cell Transformation, Neoplastic; D006801:Humans; D009369:Neoplasms / Q000139:chemically induced / Q000209:etiology*; D009374:Neoplasms, Experimental / Q000473:pathology; D009857:Oncogenes; D012106:Research
D002273:Carcinogens