Fig. 1From: Biodistribution of arctigenin-loaded nanoparticles designed for multimodal imagingThe characterization of NPs. A The general strategy for the synthesis of blank fluorescent NPs (BF NPs) and ATG conjugated poly-lysine fluorescent NPs (AF NPs). B TEM images of AF NPs; scale bar 100 nm. The particle size distribution of AF NPs was determined; the mean diameter of the NPs was 33 nm. AFM images of AF NPs were obtained; the height of the NPs was 32.54 nmBack to article page