Amino acids as functional nutrients in stress mitigation of aquatic species: mechanisms and applications in aquaculture Blue Biotechnology Springer Nature Link Can Oxidative Stress Be Reduced? Study on Riagev Finds Increases in NAD, NAD+, and Glutathione, Reductions in Cortisol Nutraceuticals World Comparison of Circulating Markers and Mucosal Immune Parameters from Skin and Distal Intestine of Atlantic Salmon in Two Models of Acute Stress