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Effect of differently charged compact ligands on QD-JB577 uptake. QDs (red) with different coatings were uptaken by Human oligodendroglioma cells. (a) QDs with CL2 coating. (b) QDs with CL4 coating. (c) QDs with polyethylene glycol coating and (d) QDs with CL1. Nuclei stained with 4′,6-diamidino-2-phenylindole (blue).
