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. 2018 Aug 18;5:864–870. doi: 10.1016/j.toxrep.2018.08.015

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© 2018 The Authors

This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

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Fig. 4 — Changes in IL-8 and GRO secretion levels over a one-month period of repeated CSE exposure. Organotypic cultured bronchial tissues were subjected to a one-month period of repeated CSE exposure. (A–B) Quantified IL-8 levels (A) and IL-8 fold increase compared with an untreated control (B) over this period. Data on day 13 at 10 μg/ml is missing due to technical failure. (C–D) Quantified GRO levels (C) and GRO fold increase compared with an untreated control (D) over this period. Data are plotted as means of triplicate measurements, and the error bars show standard errors. *Significantly different from untreated controls on each exposure day (p < 0.05, one-way ANOVA with Dunnett’s test).