Effect of members of the miR-17-92 cluster on apoptosis. (A) Expression of the proapoptotic protein Bim in HUVECs after transfection with precursors for the indicated miRs. A representative Western blot is shown; n = 3 experiments. (B) Detection of annexin-positive HUVECs after transfection with the miR precursors in the presence or absence of H2O2 for 14 hours; n = 3-11 experiments. *P < .05.