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. 2011 Jun 28;123(1):58–70. doi: 10.1093/toxsci/kfr164

FIG. 4.

FIG. 4.

Measures of total chromium (Cr) in the oral mucosa, glandular stomach, and small intestine following 90 days of exposure to SDD in drinking water. Note that all values in control and 0.3 mg/l SDD groups are estimates and were either below the method detection limit (MDL) or above the MDL but below the method reporting limit (MRL). The MDL and MRL for the intestinal samples were 0.02 and 0.15 μg/g, respectively, whereas the MDL and MRL for oral cavity tissue are about 10-fold higher. Data plotted are mean and SEM. All tissues exhibited significant (p < 0.001) trend for increased Cr levels. Bars under the capped line were all significantly increased relative to their respective control tissues by Shirley’s test (p ≤ 0.05). *Significantly different from control by Shirley’s test (p < 0.05). The inset shows a comparison of Cr in scraped epithelial cells from the duodenum (D) and proximal portion of the jejunum (J) in the 14 and 60 mg/l SDD treatment groups. Data represent mean and SEM.