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. Author manuscript; available in PMC: 2016 Jan 1.
Published in final edited form as: J Toxicol Environ Health A. 2015;78(9):583–594. doi: 10.1080/15287394.2015.1015699

Figure 2.

Figure 2

Box-whisker plots of transcript production in ALI NHBE and HNE cells exposed to PM10 (left panel) and PM>10 (right panel) size fractions. All transcript levels are normalized to HEPA-air controls. (+) signifies outliers. * signifies p<0.05, ** signifies p<0.0001, when compared with controls. P-values shown in plots are p-values for cell type differences.