PDGF-D and PDGF-Rβ expression in glomeruli. PDGF-D is uniformly expressed in visceral epithelial cells and arteriolar wall in A: normal kidneys, B: kidneys with AVR, and C: kidneys with CAN. PDGF-Rβ is expressed weakly in mesangial areas in D: normal kidneys, E: kidneys with AVR, and more prominently in mesangial areas in F: kidneys with CAN. It is also expressed in some parietal epithelial cells and periglomerular areas in all three groups. Original magnification, × 400.