PAS stained microscopic images demonstrating brush borders of kidney tubules in the cortex and medulla. Images A and E shows normal tubular brush borders. Images B and F are of glycerol treated AKI group showing damaged brush borders of loop of Henle and proximal tubules. Images C and G are taken from CA treated animals, a remarkable reduction in the damage of brush borders can be observed while images D and H displays protection with CA-AuNPs. (Magnification; 600x).