We analyzed seven different individuals with an NKG2C+ population and having at least one copy of HLA-C2 and co-inheriting both KIR2DL1-C245 and KIR2DL1-R245 allotypes to determine whether higher education and stronger “missing self” reactivity was preferentially associated with expansion of NKG2C after HCMV infection (Figure 7A). This evidence concerns the gene KIR2DL1 and cytomegalovirus infection.