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Plasma buprenorphine concentrations. (A) Plasma concentrations over 12 h after a single injection of 0.2 mg/kg SRB SC or 0.02 mg/kg buprenorphine SC. (B) Plasma concentrations over 168 h for a single injection of 0.2 mg/kg SRB SC or 0.02 mg/kg buprenorphine SC every 12 h for 3 d. Plasma buprenorphine concentrations are reported as the mean ± SEM at each time point (SRB, n = 9; buprenorphine, n = 8).
