Figure 4From: Carboxymethyl chitosan-folic acid-conjugated Fe3O4@SiO2 as a safe and targeting antitumor nanovehicle in vitroFTIR spectra. (a) OCMCS, (b) OCMCS-FA, (c) Fe3O4@SiO2, and (d) Fe3O4@SiO2-OCMCS-FA.Back to article page