Figure 2.

Relationships between NLR, aldehyde dehydrogenase 1 (ALDH1) expression level, and clinical outcome. (a) Representative images of immunohistochemical (IHC) staining with anti-ALDH1 antibodies of oral cancer and hypopharyngeal cancer specimens. Survival differences demonstrated according to the staining of ALDH1 in (b) overall survival rate and (c) disease failure-free rate. (d) NLR levels in the groups of HNSCC patients with and without ALDH1 positive staining in tumor specimens. The data show the third quartile (Q3) and first quartile (Q1) range of the data and data outlier. Lines indicate the median values.