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An alternative: Measuring urine levels of xanthurenic acid following intake of a high dose of tryptophan
Biochim Biophys Acta 815:184188 Furukawa T, Meydani SN, Blumberg JB (1987) Reversal of age-associated decline in immune responsiveness by dietary glutathione supplementation in mice
A spray format avoids the pipetting and mixing steps associated with powders, which can matter when a study involves a large number of replicate applications spread across many sessions
Vitamin B12also known as cobalaminis an essential nutrient that supports red blood cell production, nerve function, and DNA synthesis
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