Fig. 5. (A ) Typical records of oscillatory vasomotion at 10−5m phenylephrine in vessels pretreated with no inhibitor (control), l-NAME (10−4m) alone, indomethacin (INDO, 3 × 10−5m) alone, and a combination of l-NAME and indomethacin. Arrows indicate amplitudes of oscillatory vasomotion. (B ) Amplitude of 10−5m phenylephrine-induced oscillation are summarized (n = 5). *Significantly different from control (P < 0.05).