Figure 4. Kyoto Encyclopedia of Genes and Genomes (KEGG) functional enrichment of DEGs in osteogenic differentiation of MSCs. (A) The main enrichment results of the up-regulated genes (Count represents the number of enriched genes). (B) Heatmap of the relationship between up-regulated genes and KEGG terms. (C) The main enrichment results of the downregulated genes. (D) Heatmap of the relationship between downregulated genes and KEGG terms.