Jacquet, Y F Morphine action at central nervous system sites in rat: analgesia or hyperalgesia depending on site and dose. [electronic resource] - Science (New York, N.Y.) Nov 1973 - 490-2 p. digital Publication Type: Journal Article ISSN: 0036-8075 Standard No.: 10.1126/science.182.4111.490 doi Subjects--Topical Terms: AnimalsBrain--drug effectsCaudate Nucleus--drug effectsCerebral Ventricles--drug effectsDose-Response Relationship, DrugElectroshockHippocampus--drug effectsHyperesthesia--chemically inducedMaleMorphine--administration & dosageRatsSeptal Nuclei--drug effectsStereotaxic TechniquesThalamus--drug effects