GLO1 and neoplasm: Specific molecular functions associated with iron binding (iron, ferric ion and haemin), as well as nitrous-oxide reductase, metalloexopeptidase and lactoylglutathione lyase activity, were higher in tumour sites compared to control location-matched sites and tumour-adjacent sites from OSCC patients (Supplementary Figs. 3 and 4, Supplementary Table 4).