IL2RA and hepatocellular carcinoma: Differences in the proportions of CD25+ NK cells were mirrored in the MFI of CD25 expression, with significantly increased MFI for CD25 in HCC-stimulated NK cells from HCMV+ individuals 2 wk postvaccination (baseline: median 849, IQR 745–1061; week 2: median 1014, IQR 841–1147, p = 0.003).