Effects of KRGCD and KRG on the gastric mucosal blood flow. Gastric mucosal blood flow was measured using a laser Doppler flowmeter (a). Effects of KRGCD (b) and KRG (c) on basal gastric mucosal blood flow. n = 3-4 for each group. Each value represents the mean ± SEM. * p < 0.05, ** p < 0.01 vs. control, Dunnett's multiple-range test.