These results are in agreement with a separate experiment using immunofluorescent staining to detect endogenous FOXM1 protein levels on cultured primary normal human oral keratinocyte (NHOK1), dysplastic (DOK) and HNSCC (UK1) cells (Fig. 2A; Supplemental Fig. S1). The gene discussed is FOXM1; the disease is head and neck squamous cell carcinoma.