Fischer rats are more sensitive than Lewis rats to the suppressive effects of morphine and the aversive kappa-opioid agonist spiradoline

Behavioral Neuroscience (2013) - Comment
pubmed: 24128363 doi: 10.1037/a0033943 issn: 1939-0084 issn: 0735-7044

Christopher S. Freet, Robert A. Wheeler, Ellen Leuenberger, Nicole A. S. Mosblech, Patricia S. Grigson