Figure 4 of Hara, Mol Vis 2009; 15:2515-2520.

Figure 4. Cytokine secretion by SV40-HCEs cultured under 20% O2 (control group) or 2% O2 (hypoxia group) stimulated with LPS. The culture medium was collected 24 h after LPS exposure and analyzed for the presence of IL-6 and IL-8 proteins using ELISA. The p-values were calculated using a two-tailed paired t tests. The triple asterisk indicates a p<0.001).