Research Article

Carboxyl of Poly(D,L-lactide-co-glycolide) Nanoparticles of Perfluorooctyl Bromide for Ultrasonic Imaging of Tumor

Figure 4

(a) Ultrasound imaging of NPs and MPs at 10 MHz in vitro. (b) Gray-scale ultrasonic intensity of NPs and MPs. NPs presented similar gray-scale intensity to MPs .
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(b)