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Relative gene expression levels of (A) NOP or (B) ppN/OFQ, in the BNST of rats measured 1 week or 3 weeks following termination of chronic ethanol (ethanol-dependent) or vehicle (nondependent) administration. Data are expressed as mean (±SEM) values relative to mRNA levels in experimentally-naïve age-matched controls. * p < 0.05, ** p < 0.01, *** p < 0.001.
