Figure 4
From: Acute L-Arginine supplementation does not increase nitric oxide production in healthy subjects
Plasma concentration of L-arginine. The symbols ***(P < 0.001), **(P < 0.01) and *(P < 0.05) denotes significantly different from placebo; a(P < 0.01) denotes significantly different from 0 minutes. L-Arg = L-arginine supplemented group; Pla = Placebo group.