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. 2018 Dec 7;8:17701. doi: 10.1038/s41598-018-36023-w

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© The Author(s) 2018

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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D-APV bilateral BLA infusions prevents both pheromone odor conditioning and classical odor conditioning. (A) Percentage freezing time during the testing to the conditioned odor terpinene in odor/shock conditioned (O⁺/S⁺) rats, infused with either D-APV or saline. (B) Percentage freezing time during the testing to the conditioned odor terpinene in pheromone molecule conditioned rats (O⁺/Ph), infused with either D-APV or saline. **p < 0.01. Error bars, mean ± SEM. (C) Converging pathways of classical and pheromone fear conditioning in rats. MOB: main olfactory bulb; AOB: accessory olfactory bulb; BLA: basolateral amygdala; CeA: central amygdala; PAG: periaqueductal grey.