Figure 4

Luciferase expressions of tumor xenografts in nude mice with UTMD and PEI. Control: non ultrasound exposure; P: pCMV-LUC; in the same condition (control or ultrasound exposure), as compared with PBS group, *P < 0.01; as compared with P group, †P < 0.01; as compared with P/SonoVue group, ‡P < 0.01; as compared with control group, §P < 0.01.