Serum markers of hepatic injury and cholestasis including direct bilirubin, total bilirubin, bile acids, GGT, and ALT in preterm piglets after 14 days of treatment PN plus the following: Intralipid (IL), Intralipid plus vitamin E (ILE), Omegaven (OV), or Omegaven plus phytosterols (PS). Values are means ± SEM; n = 8–10 pigs/group. Differences between treatment groups were analyzed using ANOVA, Kruskal-Wallis, and Mann-Whitney U tests. *P < .05 vs IL. ALT, alanine aminotransferase; ANOVA, analysis of variance; GGT, gamma glutamyl transferase; PN, parenteral nutrition; SEM, standard error of the mean.