Fig. 2.

Immunostaining of P311 in the renal tissues of patients with different grades of IgA nephropathy. Tubulointerstitial tissue of a patient from the (a) severe fibrosis group, (b) moderate fibrosis group, (c) mild fibrosis group, and the (d) renal glomerulus of a patient from IgAN. The staining of P311 in tubular epithelial cells increases with the degree of tubulointerstitial fibrosis (a–c), but there is no P311 staining in renal glomerulus from IgAN (d). Magnification: ×200. Results are from representative sections of different groups