Figure 7From: Reduced cytotoxicity of insulin-immobilized CdS quantum dots using PEG as a spacer Fluorescence microscopic images of Live/Dead dye-stained fibroblasts cultured for 2 days. In a (a) polystyrene culture dish and in the presence of (b) CSNPs, (c) PCSNPs, and (d) ICSNPs. Live and dead cells were stained and visualized in green and red, respectively, under a fluorescence microscope.Back to article page