Fig. 2From: Functionalized Folate-Modified Graphene Oxide/PEI siRNA Nanocomplexes for Targeted Ovarian Cancer Gene TherapyThe characterization of the nanoscale delivery system. Atomic force microscopy (AFM) and dynamic light scattering (DLS) were used for characterizing morphology and size distributions: a GO and b PEG-GO-PEI-FA. Raman spectra for the analysis of the generated graphene oxide surface of GO, GO-PEG, and PEG-GO-PEI cBack to article page