CD68 and hepatocellular carcinoma: Comparing the prognostic value of xCT expression in CD68+ macrophages with traditional clinical features, we found that gender and xCT expression in CD68+ macrophages were independent prognostic factors of HCC (Figure S6A, Supporting Information); based on these two prognostic factors, a nomogram was constructed to quantitatively predict the prognosis of HCC patients (Figure 9N).