STAT3 and hepatocellular carcinoma: Interestingly, after coincubation of CFSE‐labelled Huh7 and HepG2.2.15 cells with THP‐1‐induced macrophages for 2 h, flow cytometry showed that STAT3 knockdown could promote macrophage‐mediated phagocytosis of HCC cells (Fig. 4E,F).