We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleOpioid Receptors Regulate the Extinction of Pavlovian Fear Conditioning.AuthorsMcNally, Gavan P.; Westbrook, R. FrederickPublicationBehavioral Neuroscience, 2003, Vol 117, Issue 6, p1292ISSN0735-7044Publication typearticleDOI10.1037/0735-7044.117.6.1292