Figure 3: Gene ontology (GO) analysis for over-expressed genes during postnatal liver maturation compared to day 60. (A) Heat map for GO categories with significantly over-expressed genes at ages of day −2, 1, 5, 20, and 25. The color represents the false discovery rate (FDR) of each GO category. The numbers on the right are the cumulative numbers of GO categories. The three brackets B, C, and D identify groups of GO categories enriched at specific ages during development. Representative GO categories in each bracket are show in the corresponding panels of (B), (C), and (D).