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CPP in rats before (day 1) and after (day 8) training with a palatable food reward and 1 day after IIH (day 10). CPP is expressed as minutes spent on either side of a 2-sided CPP apparatus. Data are means ± SE; *P ≤ 0.05 between groups. F(3,3) = 2.7 (day 10, side 1 vs. side 2).
