Ontogeny of diclofenac glucuronide (DG) formation (A) and the protein abundance of UGT2B7 (B), UGT2B4 (C), and UGT2B17 (D) in pediatric cryopreserved human hepatocytes (N= 50). The violin (truncated) plots indicate the range, median, and 25th to 75th percentiles of protein abundance values. The data were compared across different age groups by Kruskal Wallis test. *, **, and *** indicate p values of <0.05, <0.001, and < 0.0001, respectively.