EPHA2 and neoplasm: SGC 7901 (human gastric adenocarcinoma) cells were injected into the axillary fossa region of 3–4 weeks old Balb/C mice (18–22 g), and when the tumor size grew to 52.2 ± 6.9 mm3, intratumoral injections of 0.9% sodium chloride as a blank control group, non-silencing siRNA with liposomes and EphA2-siRNA with liposome were given twice in a week.