Fig. 6

In vitro imaging of targeted and blank nanobubbles. a1 Ultrasound images of nanobubbles at different concentrations in vitro. a2 Quantification of imaging intensity of nanobubbles in vitro. b1 The decay rate of targeted nanobubbles in vitro. b2 The decay rate of blank nanobubbles in vitro. c1 Ultrasound images of targeted nanobubbles before and after destruction. c2 Quantification of imaging intensity of targeted nanobubbles before and after destruction. *P < 0.05