When total Lin- cells (i.e not TCR-bearing lymphocytes, nor monocytes) were considered (Figure 3D, Supplementary Figure S5D), CD56 dim ‘cytotoxic’ NK cells (Figure 3E) were, as expected, the remaining major cell population, independently of the phenotype, averaging between 10 and 15% of CD45+ cells (Supplementary Figure S5E), and there was no difference in NK concentration between HC and CF individuals. The gene discussed is NCAM1; the disease is cystic fibrosis.