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. 2016 Jun 13;11(6):e0157058. doi: 10.1371/journal.pone.0157058

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© 2016 Kim 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 credited.

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Fig 1 — Cytotoxic effects of diesel exhaust particulates in nasal fibroblasts. Nasal fibroblasts were treated with various concentrations (0–800 μg/mL) of diesel exhaust particulates for 72 hours. Cytotoxicity tests were performed by MTT assay. DEP did not affect cell survival until the concentration reached 400 μg/mL. The graphic data represents the means ± SEM of three independent experiments. * p<0.05 compared to control.