Seven days after delivery of LV-V5-CFTR to CF KO rats (n = 16), the basal KRB (−24.2 ± 7.8 mV) response exhibited a significantly smaller depolarisation compared to pre-treatment (−32.8 ± 7.9 mV), which was closer to a WT response (p ≤ 0.05) (Figure 3). The gene discussed is CFTR; the disease is cystic fibrosis.