1. Opioid activity of a peptide, β-lipotropin-(61–91), derived from β-lipotropin;Cox,1976
2. Immunohistochemical studies using antibodies to leucine-enkephalin: initial observations on the nervous system of the rat;Elde;Neuroscience,1976
3. Purification and properties of enkephalin—the possible endogenous ligand for the morphine receptor;Hughes;Life Sci.,1975
4. Inactivity of narcotic glucuronides as analgesics and on guinea-pig ileum;Schulz;J. Pharmacol. Exptl. Therap.,1972
5. Brain-pituitary opiate mechanism: pituitary opiate receptor binding, radioimmunoassays for methionine enkephalin and leucine enkephalin, and 3H-enkephalin interactions with the opiate receptor;Simantov,1976