IHC for human PSMA expression. Kidney tissues from wild-type (+/+) and B-hPSMA mice (H/H) were stained with an antibody specific for human PSMA, and only the kidney tubular epithelial cells from B-hPSMA mice (H/H) showed hPSMA expression. (C57BL/6-1: kidney tissues from C57BL/6 mice were only stained with anti-IgG antibody; Human,C57BL/6-2 and B-hPSMA mice kidney tissues were stained with anti-human PSMA antibody.)