Figure 5: a) Epifluorescence imaging of doubly functionalized RGDPEGylation- QDs (showing αvβ3 integrin targeting due to RGD peptide) and RAD-PEGylation-QD nanoplatforms (lacking the integrin targeting due to the scrambled RAD peptide).
b) Confocal images in the y-z axis, showing uptake of RGD-PEGylated-QDs nanoplatforms by the HUVECs (the lower panel), and the lack of uptake in the case of RAD-PEGylated-QD nanoplatforms (upper panel). The yellow color (as a pseudocolor) shows the propidium iodide labeled nuclei and the green color is due to QDs fluorescence.