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Iohexol resulted in more severe morphological injury compared with iodixanol in 5/6 NE rats. (a) Representative photomicrographs of tubular cell injury (arrow) in rat kidney tissue sections of the control, iohexol, and iodixanol groups. (b) Quantitative analysis of histologic scoring. Original magnifications: ×100. Hematoxylin and eosin stain. Calibration bar = 20 μm. ** P < 0.01 versus the control group; n = 8.
