Figure 2

ALDH2 expression in tissues and cell lines. (A) ALDH2 protein expression staining (upper,āĆā200; lower,āĆā400) showing that ALDH2 protein expression was reduced in tumour tissues. (B) ALDH2 mutation frequencies across HNSCs obtained from cBioPortal. (C) Relative expression of ALDH2 in different HNSC cell lines.