SEARCH Articles Figures Tables 5-Agonist deltorphin 5-Agonist deltorphins 8-Affinity with deltorphins 8-Selective opioid agonist deltorphin Antinociception action of deltorphin Behavioral effects deltorphins Deltorphin Deltorphin Deltorphin agonist activity Deltorphin analogs Deltorphin antinociception activity Deltorphin pharmacological activity Deltorphins antinociception Deltorphins from frog skin Deltorphins selectivity Deltorphins spinal Deltorphins structure activity Dependence deltorphins Of deltorphin RJ bioassay activity of deltorphin