In both, non-CF and CF bronchial epithelia, LXA4 stimulates whole-cell Cl− currents which are inhibited by NPPB (calcium-activated Cl− channel inhibitor) and BAPTA-AM (chelator of intracellular Ca2+) but not by CFTRinh-172 (CFTR inhibitor) [71, 72]. Here, CFTR is linked to cystic fibrosis.