Figure 4.
Effects of curcumin and CurDD on (A) serum vascular endothelium growth factor (VEGF) secretion and (B) cyclooxygenase-2 (COX-2) expression from tumor tissue of a HepG2-transplanted tumor in nude mice and in the treatment groups at 21 days after treatment. (Data are presented as means ± SD (n = 8); a p < 0.05 compared to control group, b p < 0.05 compared to HepG2 group, c p < 0.05 compared to HepG2+Cur 300 mg/kg group, d p < 0.05 compared to HepG2+Cur 3000 mg/kg group, and e p < 0.05 compared to HepG2+CurDD 500 mg/kg group).