Research Article

Highly Biocompatible Nanoparticles of Au@Fluorescent Polymers as Novel Contrast Agent for In Vivo Bimodality NIR Fluorescence/CT Imaging

Figure 2

Computed tomography (CT) images of Au@FP nanoparticles and clinical CT contrast agent (Ultravist® 300) of increasing concentration (μg/mL) (a); standard curve of CT values (hounsfield units, HU) of Au@FP nanoparticles at different concentrations (b); confocal images of HUVECs incubated with 200 μg/mL of Au@FP nanoparticles for 2 h the nuclei of cells were stained by DAPI (A), tubulin structure was stained by Alexa Fluor® 488-labeled antibody (B), the images of Au@FP nanoparticles in cells (C), and the merged images (D). Scale bars are 25 μm.