CD8A and cytomegalovirus infection: Additionally, γδ T cells and canonical CD8+ T cells expressing NK cell receptors such as Fcγ receptor III (FcγRIII), also known as CD16), NKG2C, and killer-like immunoglobulin receptors (KIRs) and demonstrating hybrid T-NK cell functions have also been observed in adults with chronic HCMV infection (13–15).