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. 2008 Feb 1;116(6):703–708. doi: 10.1289/ehp.10978

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Micro-XRF spectra of liver from a control mouse and a mouse exposed for 14 days to As(III) + Se(IV). Abbreviations: Cl, chlorine; Fe, iron. No UVR was applied to these mice, because in the longer-term experiments, UVR was started 14 days after the start of the As to allow for buildup. Here the endogenous Se level is quite a bit higher relative to Zn compared with the level seen at 196 days and is increased only marginally by supplemental Se. However, even in the presence of Se, a small As peak was detected.