Figure 1From: Investigation of tumor hypoxia using a two-enzyme system for in vitro generation of oxygen deficiencyTranscriptomics from HNO97 head and neck squamous cell carcinoma cells under normoxia and hypoxia. Gene expression pattern of known and validated HIF-1 target genes [15] before and after 24 h incubation under normoxic and hypoxic conditions (2% O2) using the enzymatic GOX/CAT system and a hypoxia chamber. The colour scale encodes differential regulation of genes from green (≤- 2-fold downregulated vs. reference normoxia t = 0 RNA) to red (≥+ 2-fold upregulated vs. reference normoxia t = 0 RNA).Back to article page