Fig. 3From: Plasma levels of a methadone constant rate infusion and their corresponding effects on thermal and mechanical nociceptive thresholds in dogsmechanical thresholds (MT) in N of group M over time with corresponding methadone plasma levels in ng ml− 1, both as mean ± SD; BL: baseline; dotted arrow: stop of CRI; * significant difference (p < 0.05) to BL in group M; ° significant difference (p < 0.05) between groupsBack to article page