Figure 5.

Amino acid composition of breast milk varies by birth weight in control infants. (A) Fold change concentration of amino acids in maternal milk. Red cells indicate mean values that are significantly higher and blue cells indicate mean values that are significantly lower for the designated comparison. (B) Intake of amino acids in breast milk is followed by catabolism by the intestinal mucosa for degradation to dietary amino acid precursors. Figure created with BioRender.com. (C–F) Boxplots of concentration levels of arginine, glycine, glutamine and lysine between the birth weight control groups. * p ≤ 0.05, ** p < 0.01, *** p < 0.001 by Welch’s T-Test.