We also detected the expression of CXCL3 in three HNSCC cell lines (HSC4, KB, and CAL27) and one normal oral epithelial cell line (HOEC) by qRT-PCR, and the results showed that the mRNA expression level of CXCL3 was significantly higher in HSC4, KB, and CAL27 cells than that in HOEC cells (Figure 6E). The gene discussed is CXCL3; the disease is head and neck squamous cell carcinoma.