Figure 4. Effect of different groups on NRK apoptosis. (A) Apoptosis was tested by Annexin V-FITC/PI staining method. (B) The protein levels of Bax, Bid, Bim, Bcl-2, cleaved caspase-3, and cleaved caspase-9 were measured by Western blot, and analyzed by ImageJ. * P< 0.05 vs. Control; &, p < 0.05 vs. Exo1h+Cp.