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. 2017 Sep;24(9):440–448. doi: 10.1101/lm.044297.116

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© 2017 Holmes and Westbrook; Published by Cold Spring Harbor Laboratory Press

This article is distributed exclusively by Cold Spring Harbor Laboratory Press for the first 12 months after the full-issue publication date (see http://learnmem.cshlp.org/site/misc/terms.xhtml). After 12 months, it is available under a Creative Commons License (Attribution-NonCommercial 4.0 International), as described at http://creativecommons.org/licenses/by-nc/4.0/.

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Figure 1. — The mean (+SEM) level of freezing during test presentations of the tone for each group in Experiment 1. The asterisk denotes that freezing to the tone in Group 20 was significantly lower than the average level of freezing to the tone among the other three groups.