The expression levels of c-Jun, FosL1 and JunB in metastatic HNSCC cells (HN30, KCC-T871, YCU-T892) and non-metastatic HNSCC cells (Detroit562, PE/CA-PJ34, KCC-M871, YCU-MS861, YCU-M862) were analyzed by Western blotting as shown in Fig. 1f. This evidence concerns the gene JUNB and head and neck squamous cell carcinoma.