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. 2020 Apr 11;21(8):2664. doi: 10.3390/ijms21082664

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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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Effects of Developmental Pb Exposure on Long-Term Recognition Memory Assessed in Novel Object Recognition (NOR). (A) Schematic representation of the NOR task, consisting of Familiarization phase with two identical objects (represented as squares) and Novelty phase in which one of the two familiar objects (represented as a square) was replaced by a novel object (represented as a circle); (B) Discrimination index between a familiar object and novel one during Novelty session. n = 16 (7 females and 9 males)/group; * p < 0.05.