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. 2015 Jul 24;8:43. doi: 10.1186/s13041-015-0134-x

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© Nesil et al. 2015

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 2 — Effects of nicotine on step-through latency in the multiple-trial passive avoidance task on Days 22–26 in F344 and HIV-1Tg rats. Rats received daily nicotine injections five-min before the behavioral test (N = 9–12/group). Data are shown as mean ± S.E.M of the one-step through avoidance latencies at 1, 24, 48, and 72 h after the foot shock. *p < 0.05 in difference from F344-nicotine treated group; ^# p < 0.05 in difference from HIV-1Tg saline-treated group (Mann–Whitney U-test)