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. Author manuscript; available in PMC: 2011 Jan 6.
Published in final edited form as: Nanotechnology. 2010 Jul 5;21(29):295101. doi: 10.1088/0957-4484/21/29/295101

Figure 4.

Figure 4

Measurement of apoptosis by flow cytometry. MDA-231-MB and DU-145 cells were exposed to nanoparticles at a concentration 100 μg ml−1 for 1 and 24 h. Samples were labelled with propidium iodide (PI) at 24 (open bars) and 48 h (closed bars) and analysed by flow cytometry. Changes in the sub G1 cell populations are shown relative to untreated control cells. Data points show the mean from three independent measurements ± SEM.