CD4 and cystic fibrosis: Lower proportions of macrophages (51.62 vs 80.05, FDRp=0.02), CD8-T cells (1.49 vs 3.86, FDRp=0.01), B cells (0.33 vs 0.96, FDRp=0.06) and CD4-T cells (1.65 vs 3.41, FDRp=0.08) were also observed in CF.U compared with age-matched controls (figure 2E).