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Morphinans
delta Opioid Receptors
mu Opioid Receptors
Receptors, Opioid
kappa Opioid Receptors
Naltrexone
Ligands
Narcotic Antagonists
Analgesics
Pyridines
Vas Deferens
Ileum
Smooth Muscle
Brain
Muscle Contraction
Guinea Pigs
Rats
Mouse
Structure-Activity Relationship
Brain Chemistry
Co-Publications
5
4
3
2
1
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