Renin inhibition improves pancreas 3-nitrotyrosine immunostaining, as a marker for peroxyntitrite formation. A, Representative images of pancreas islet (I) (top) with quantification of converted signal intensities in average gray-scale intensities (bottom). Scale bar, 50 μm. B, Representative images of exocrine pancreas (top) with quantification of converted signal intensities in average gray-scale intensities (bottom). Scale bar, 20 μm. *, P < 0.05 when compared with SD-C **, P < 0.05, when Ren2-A is compared with Ren2-C.