Fig. 1From: Deep tissue penetration of nanoparticles using pulsed-high intensity focused ultrasoundIn vitro physicochemical properties of fluorescent dye-labeled glycol chitosan nanoparticles (FCNPs). a Structure of FCNPs. b Hydrodynamic size distribution of FCNPs after treatment of 10, 20, and 50 W pHIFU. c Fluorescence stability of FCNPs after treatment of 10, 20, and 50 W pHIFU. d Transmission electron microscope (TEM) images of FCNPs after treatment of 10, 20, and 50 W pHIFU. Scale bar indicates 200 nmBack to article page