IL12RB2 and hepatocellular carcinoma: Although there was no difference in resting (ex vivo) expression of IL-12Rβ2 on any NK cell subset (Fig. 6D and 6E), IL-12Rβ2 was significantly upregulated on the total NK cell population in HCMV− but not from HCMV+ donors after culture with HCC (Fig. 6F).