Effects of benidipine (A), amlodipine (B) and nifedipine (C) on LPC-induced attenuation of endothelium-dependent relaxation. Drugs were administered orally to rats. Rats were treated as described for Figure 1. Data are expressed as percentage of PE-induced contraction. Each value represents the mean ± S.E. of 6–10 experiments. *P < 0.05 vs. vehicle + LPC group.