IL-8 levels decreased non-significantly by ~50% in non-CF (from 20.2 ± 1.7 to 9.6 ± 2.6 ng/mL) and CF (18.4 ± 4.5 to 9.9 ± 2.8 ng/mL) cultures (Figure 2D). The gene discussed is CXCL8; the disease is cystic fibrosis.