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. Author manuscript; available in PMC: 2018 Feb 15.
Published in final edited form as: Behav Brain Res. 2016 Nov 3;319:96–103. doi: 10.1016/j.bbr.2016.10.050

Figure 6.

Figure 6

Treatment with the non-selective opioid antagonist naltrexone (1 mg/kg) reduced approach latency in the NIH test 1 h post-administration. A) Acute naltrexone treatment reduced approach latency in the novel arena, B) but did not affect the amount of food consumed. N= 9–10 mice per group. C) In a separate cohort, animals treated with naltrexone and tested 24 h later did not exhibit any changes in approach latency or D) food consumed. N=9–10 mice per group. (*p < 0.05 compared to vehicle).