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. 2011 Sep 24;8:29. doi: 10.1186/1743-8977-8-29

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Copyright ©2011 Kim et al; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Differential cell analysis of BAL fluid in animals exposed to Cu nanoparticles (NPs). Number of cells in BAL fluid from mice after sub-acute inhalation (A) and intratracheal instillation (B) exposure of Cu NPs. Data are expressed as mean ± SE; *p < 0.05, **p < 0.01, ***p < 0.001 significantly different from sham-exposed mice; Macrophages (p < 0.05) and Neutrophils (p < 0.001) from instillation exposure were analyzed by one-way ANOVA test of a trend for comparison between NP exposure groups and controls.