The last paragraph of the Results section regarding the conditioned preference test mentions a daily dose of morphine, our positive control, of 10 mg/kg which is being corrected to 15 mg/kg. The relevant figure (5f) gives the right dose though.
Authors have also added the DOIs for Alexander et al, Ding et al, Mazella et al, Mazella et al, and Moha ou Maati et al (2012) in the references.
Br J Pharmacol. 2020;177:5246 10.1111/bph.15280
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