Fig. 2From: Hyaluronic Acid-Functionalized Gadolinium Oxide Nanoparticles for Magnetic Resonance Imaging-Guided Radiotherapy of TumorsThe chemical structure and composition of the HA-Gd2O3 NPs. a The full-scan XPS spectrum of HA-Gd2O3 NPs. b Gd3d spectrum. c O1S spectrum. d The FTIR spectrum of HA-Gd2O3 NPsBack to article page