Fig. 4From: pH- and acoustic-responsive platforms based on perfluoropentane-loaded protein nanoparticles for ovarian tumor-targeted ultrasound imaging and therapya US images of FA-FRT-PFP mixed with agarose gel at different pH values and irradiated by different of LIFU power intensity. b, c The corresponding statistical data of US signal in a. d–g The optical microscopy images of FA-FRT-PFP mixed with agarose gel at different pH values and irradiated by 2.0 W/cm2 for 3 minBack to article page