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Confocal fluorescence images of (A) HeLa and (B) HEC-1-A cells incubated with AS1411-gold nanoparticles with IQ for 15 min at 37 °C. Nucleolin is stained with AlexaFluor 647® (red), IQ emits green fluorescence. Cell nuclei are stained with Hoechst 33342 (blue). Scale bar: 20 µm.
