Figure 2. Gene Ontology (GO) term enrichment and KEGG pathway analysis for upregulated transcripts in young and old mouse aortae. (A) The top 10 enriched GO biological process terms in the transcripts upregulated in old mouse aortae (adjusted p<0.05 and abs (log2FoldChange) > 0). Individual GO terms were sorted by adjusted p values. (B) The top 10 enriched KEGG pathways in the transcripts upregulated in old mouse aortae (adjusted p<0.05 and abs (log2FoldChange) > 0). Individual pathways were sorted by adjusted p values. (C–E) Normalized counts of significantly induced genes in old aortae compared with young counterparts, including proinflammatory genes (C), senescence marker (D), and complement system components (E). Data are presented as a scatterplot of individual points with mean±SD, n=5. *p < 0.05, **p < 0.01, ***p < 0.001 compared to young aortae, unpaired two-tailed Student's t-test.