Evidence for two subtypes of δ opioid receptors in rat brain

EFFECTS OF CHANGES IN THE STRUCTURE OF ENKEPHALINS AND OF NARCOTIC ANALGESIC DRUGS ON THEIR INTERACTIONS WITH μ‐ AND δ‐RECEPTORS

1980 • 314 citations

A high affinity, highly selective ligand for the delta opioid receptor: [3H]-[D-PEN2, pCl-PHE4, D-PEN5]enkephalin

1989 • 80 citations

Multiple agonist-affinity states of opioid receptors: regulation of binding by guanyl nucleotides in guinea pig cortical, NG108-15, and 7315c cell membranes.

1988 • 78 citations