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. 2015 Sep 14;10(9):e0138112. doi: 10.1371/journal.pone.0138112

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© 2015 Du et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Fig 2 — Blood Pb levels in control and Pb-exposed rats at PND30, PND60 and PND90 (A). Brain Pb levels in control and Pb-exposed rats at PND30, PND60 and PND90 (B). Data are expressed as mean ± SEM. **P<0.01, ***P<0.001, n = 8 per group.