Fig. 2From: Internal cross-linked polymeric nanoparticles with dual sensitivity for combination therapy of muscle-invasive bladder cancerCharacterization of cross-linked PEG-PCL-SS nanoparticles. a Chemical structure and 1H-NMR spectra of PEG-PCL-SS copolymer. b Size distribution of cross-linked PEG-PCL-SS nanoparticles. c Transmission electron microscopy (TEM) image of PEG-PCL-SS nanoparticles. d Optical properties of IR780 and DOX-loaded PEG-PCL-SS nanoparticlesBack to article page