Development of the 13th Report on Carcinogens should be suspended until after the National Academy of Sciences concludes its congressionally mandated review of the previous ROC, the American Chemistry Council argues. "[S]ignificant scientific flaws" are likely with the existing process, ACC says, as it "starts not with the data, but rather with the default assumption that essentially all tumors induced in animal studies infer carcinogenic hazard or risk to humans, and then requires that there be unequivocal evidence to refute this assumption."

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