KLRC2 and cytomegalovirus infection: There were no differences in the MFI values for NKR‐P1A staining in NK cells from CMV seronegative and seropositive individuals, indicating that NKR‐P1A expression in neither NKG2C+ (Figure 4C,E) nor NKG2C‒ NK cells (Figure 4D,F) were affected by CMV infection.