We then performed Western immunoblotting using a combination of monoclonal antibodies (MAb) that recognized distinct regions within P. aeruginosa LPSs, including MF15-4 (serotype O5 OSA-specific) [40, 41]; N1F10 (CPA-specific) [40, 42]; 5c-7-4 (inner core-specific) [40, 43]; 5c-101 (outer cores-pecific) [40, 43]. The gene discussed is CPA1; the disease is obstructive sleep apnea syndrome.