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. 2019 Oct 15;12:244. doi: 10.3389/fnmol.2019.00244

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Copyright © 2019 Custodio, Rubio and Paz.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Representative microphotography (objective 60× and zoom 1.6×) showing immunopositivity for the ERK (green) and DAPI-stained nuclei (blue). The graph indicates optical density arbitrary units for control group (white bars) and ozone group (black bars) in male and females, (A) CA1, (B) CA3 and (C) CX. We observed a statistically significant decrease in the expression of ERK in the CA1 subfield in both males and females exposed to ozone. Bars indicate the mean ± SEM, using univariate comparison statistics. ^∗P ≤ 0.05. Scale bar = 20 μm.