title: Two views of the causes of cancers.
mesh_terms: 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
chemical_list: D002273:Carcinogens; D004273:DNA, Neoplasm; D004785:Environmental Pollutants