Figure 5

EPR spectra of 1 nM Ang II and 90% Tf-treated HGECs with DMPO. (a) HGECs (1 × 106 cells ml−1) with 100 mM DMPO, (b) same as (a) but with 1 nM Ang II, (c) same as (a) but with 50 μM 90% Tf, (d) same as (a) but with 50 μM 90% Tf and 1 nM Ang II stimulation. Each experiment was repeated at least twice, and the results were similar.