A. Tumor volume measured at the indicated time-points. Treatment was initiated 10 days after implantation of pancreatic cancer cells into the mammary fat pads of mice. The mice were injected with either PA or PA-MSHA for 7 weeks and the tumor volumes measured. *p < 0.01. B. Caspase-3 and cleaved caspase-3 expression in xenograft mice treated with either PA or PA-MSHA.