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. 2014 Jun 5;9(6):e99175. doi: 10.1371/journal.pone.0099175

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© 2014 Liu et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

PMC Copyright notice

Representative results showing the effect of Au-NPs treatment on the expression of MMP9 and ICAM-1 in A549 (A) and 95D (B) cells. Relative band density of MMP9 and ICAM-1 to the mean value of the control group (C–H). Values are expressed as relative intensity normalized to GAPDH intensity and are given as mean ± SD from three independent experiments. *P<0.05, **P<0.01, ***P<0.001 vs. control.