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The Antinociceptive effects of Dezocine were mediated by κ and μ receptors in the abdominal constriction test. Mice were pretreated with 20 mg/kg nor-BNI and β-FNA for 24 h, then injected with 0.25 mg/kg Dezocine. Acetic acid solution was injected 15 min after drug administration. Data are presented as mean ± SEM from at least 10 mice. *p < 0.05 in comparison with Dezocine alone.
