Biphalin, an enkephalin analog with unexpectedly high antinociceptive potency and low dependence liability in vivo, selectively antagonizes excitatory opioid receptor functions of sensory neurons in culture - PubMed
Frankenstein Opioids + Pain CuntRoll
Brain enkephalin receptors in Parkinson's disease - PubMed
Enkephalin Receptor - an overview | ScienceDirect Topics