CXCR2 and hepatocellular carcinoma: The CXCR2+ cell subset in the peripheral blood of healthy controls accounted for (86.75 ± 4.27)% of all CD14+ peripheral blood monocytes, while the proportion in patients with HCC was (77.77 ± 9.17)% (Fig. 1A), which was significantly lower than that of the healthy control group (p < 0.01, Fig. 1B).