Figure 5From: Postprandial muscle protein synthesis is higher after a high whey protein, leucine-enriched supplement than after a dairy-like product in healthy older people: a randomized controlled trial Plasma 13 C 6 -Phe enrichment. Plasma enrichment of L-[ring-13C6]-phenylalanine (means ± SEM) expressed as molar percent excess (MPE), before and after ingestion (at T = 0) of the study products EXP (n = 9) and Control (n = 10).Back to article page