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A comparison of histiocytic infiltration (HI), diffuse hyperplasia, and adenomas in the duodenum of female mice and rats. The milligrams per kilogram per day dose is the average daily ingested dose of Cr(VI) over the study duration as reported in Stout et al. (2009a). The incidence data are as reported in Table 1 herein. Note that hyperplasia and tumors were not observed in rats.
