Two views of the causes of cancers.
D000818:Animals; D002273:Carcinogens; D002454:Cell Differentiation; D004273:DNA, Neoplasm / Q000235:genetics; D004785:Environmental Pollutants / Q000009:adverse effects*; D006801:Humans; D009369:Neoplasms / Q000209:etiology*; D013997:Time Factors
D002273:Carcinogens; D004273:DNA, Neoplasm; D004785:Environmental Pollutants