Figure 5. Enrichment analysis of differentially expressed CXC-motif chemokine ligands (CXCLs) in head and neck squamous cell carcinoma (HNSC). GO enrichment analysis predicted the functional roles of target genes based on three aspects, including (A) biological processes (BP), (B) molecular functions (MF), and (C) cellular components (CC). (D) Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis.