Fig. 4From: Comparison Between Folic Acid and gH625 Peptide-Based Functionalization of Fe3O4 Magnetic Nanoparticles for Enhanced Cell InternalizationFT-IR characterization of functionalized MNPs. FT-IR spectral region in the 850–1900 cm−1 range of a) NH2@MNPs, b) gH625@MNPs, and c) PEG,FA@MNPsBack to article page