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From left to right: in vitro B[a]P-exposed human fibroblasts AG1521 (FASAY) (n = 37); human lung cancers, non smokers (n = 288); human lung cancers, smokers (n = 870); human lung cancers, heavy smokers (n = 20). Lung cancer data from IARC database R14. Rare mutations were omitted in these patterns.
