IL2 and hepatocellular carcinoma: Researches showed that DC cells stimulated with zoledronic acid could make T cells secrete large amounts of interferon and enhance the cytotoxic effects on CTLs [72]; DC cells separated from the patients with HCC were cocultured with IL-2 and GM-CSF for 2 days, and then implanting the DC cells through arterial catheter to the patients could make the serum produce a large number of IL-9, IL-15, and TNF, prolonging life in patients with HCC [69, 70, 72].