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. Author manuscript; available in PMC: 2011 Jan 1.
Published in final edited form as: J Phys Chem Lett. 2010;1:1312–1315. doi: 10.1021/jz100248c

Figure 4.

Figure 4

TEM images of cells incubated with PA-QDs for 4 min. (a) Untreated cells. (b) Cells pretreated with 4 μM pyrenebutyrate for 2 min then incubated with PA-QDs and 4 μM pyrenebutyrate for 4 min. The dark circular structures within the cytosol are polyribosomes.