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. 2020 Sep 21;21(18):6937. doi: 10.3390/ijms21186937

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© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Immunostaining for anti-NeuN in the hippocampus. Representative photomicrographs of CA1, CA3 and hilus in control (A, D and G, respectively) and Pb-exposed group (B, E and H, respectively). Graphs with a quantitative representation of the differences between the number of NeuN⁺ cells in the respective areas: CA1 (C), CA3 (F) and hilus (I) expressed as mean ± Standard Error of Mean (S.E.M.) of the cell number per field in each region. * p < 0.05 compared to the control group (Student’s t-test). Scale bar: 20 μm.