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. Author manuscript; available in PMC: 2010 Jan 15.
Published in final edited form as: J Phys Chem B. 2009 Jan 15;113(2):405–408. doi: 10.1021/jp809956w

Figure 4.

Figure 4

Confocal images recorded after incubation with 4 nM PA-QDs at 37°C. (a) Incubation in PBS supplemented with 75 mM extracellular potassium. (b) Incubation in PBS. Transmitted light images are overlaid with fluorescence images to show the cellular outline. Scale bar; 20 μm.