Fig. 3From: Head and neck squamous cell carcinoma cell lines have an immunomodulatory effect on macrophages independent of hypoxia and toll-like receptor 9Lactate dehydrogenase A expression under hypoxia compared with normoxia. Succesful hypoxia in cancer cells was verified by measuring hypoxia-inducible factor 1α- regulated lactate dehydrogenase A (LDH-A) expression after 24 h exposure to hypoxia (normoxia, dotted line). Data from a minimum of 4 independent experiments, except HaCat (n = 3), is shown as box plots with 95% CIBack to article page