More Ennever Rosenkrantz and Omenn Lave Quotes | +Fav |
Extrapolating from one species to another is fraught with uncertainty... For almost all of- the chemicals tested to date, rodent bio-assays have not been cost-effective. They give limited and uncertain information on carcinogenicity, generally give no indication of mechanism of action, and require years to complete.' [They are] 'rarely the best approach for deciding whether to classify a chemical as a human carcinogen.
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