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. Author manuscript; available in PMC: 2011 Dec 1.
Published in final edited form as: Nanomedicine (Lond). 2011 Feb;6(2):365–375. doi: 10.2217/nnm.10.123

Figure 4. Fraction of 500 nm uncoated (PS) and polyethylene glycol-coated (PS-PEG) particles that are expected to penetrate 10 μm cystic fibrosis sputum layer over time.

Figure 4

Ratio of particle concentration at ΔL = 10 μm deep (CΔL) to initial particle concentration at the surface (Co) over time. Data represents three individual experiments, with n > 200 particles for each experiment. Error bars indicate standard error of the mean.

*Statistically significant differences compared with three other conditions (p < 0.01).

C: Concentration; NAC: N-acetyl cysteine; PEG: Polyethylene glycol; PS: Polystyrene.