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. 2023 Nov 15;13:19943. doi: 10.1038/s41598-023-47321-3

Figure 4.

Figure 4

Serum concentrations of amino acids significantly altered by ≥ 1.5% (A), ≥ 3% (B) or 6% (C) supplemental Lys in male Sprague–Dawley rats fed diets containing either 7% or 20% casein and supplemented with 0, 1.5%, 3%, 6% Lys or 6% Lys + 3% Arg for 1 week. Values are mean ± SEM, n = 8. Means with different letters differ, p < 0.05.