Figure 2
From: Shape dependent cytotoxicity of PLGA-PEG nanoparticles on human cells
Chemical characterization of PLGA-PEG NPs. (a) 1H-NMR spectrum of PLGA-PEG copolymer showing their chemical composition, (b) Typical FTIR spectrum of PLGA, PEG, and PLGA-PEG NPs (both spherical and needle-shaped).
