Opiate receptors and opioid peptides.

Adrenocorticotropic Hormone/biosynthesis Analgesics Animals Binding, Competitive Brain/metabolism Brain Chemistry Cyclic AMP/physiology Cyclic GMP/physiology Endorphins/analysis,metabolism,physiology Enkephalins/metabolism,pharmacology Guinea Pigs Methods Molecular Conformation Neurotransmitter Agents Protein Binding Rats Receptors, Opioid/analysis,drug effects,metabolism Sodium/pharmacology Structure-Activity Relationship

Analgesics Endorphins Enkephalins Neurotransmitter Agents Receptors, Opioid Adrenocorticotropic Hormone Sodium Cyclic AMP Cyclic GMP