Fig. 2From: Combined L-citrulline and glutathione supplementation increases the concentration of markers indicative of nitric oxide synthesisFrom phase one, an illustration of nitrite concentration in HUVECs following supplementation with L-citrulline and/or GSH. The symbol * indicates that cells supplemented with a combination of L-citrulline (CIT) and GSH underwent significant increases in nitrite formation compared to cells supplemented with phosphate buffered saline (CON) (p < 0.05)Back to article page