Fig. 4

Gene set enrichment analysis in Clusters 1 and 2 on the basis of the KEGG pathways. The pathways related to A citrate cycle and TCA cycle, B galactose metabolism, C arginine and proline metabolism, D glutathione metabolism, E proteasome metabolism, and F oxidative phosphorylation are enriched in Cluster 2. KEGG, Kyoto Encyclopedia of Genes and Genomes; TCA, tricarboxylic acid cycle