Figure 9. Diagnostic efficacy of CXC-motif chemokine ligands (CXCLs) in head and neck squamous cell carcinoma (HNSC). (A) Receiver operating characteristic curve (ROC) of CXCL1, 2, 3, 4. (B) ROC of CXCL5, 6, 7, 8. (C) ROC of CXCL9, 10, 11, 12. (D) ROC of CXCL13, 14, 16, 17. TPR: True Positive Rate, FPR: False Positive Rate.