Fig. 2.

Postnatal changes in serum metabolites with the intake of enteral and parenteral fluids. a Median amount (ml/kg/d) of enteral (mother’s milk and donor milk, solid lines) and parenteral fluids (dashed lines) given during the infants’ first 28 postnatal days. Error bars indicate 25th and 75th percentiles. Box plots showing the concentration of (b) choline, (c) betaine, and (d) methionine if the infant was receiving less or more (darker boxes) than the median parenteral fluids. Whiskers indicate 25th and 75th percentiles. *p < 0.05, Mann–Whitney U