An inability to antagonize with naloxone the elevated nociceptive thresholds resulting from electrical stimulation of the mesencephalic central gray

A stereotaxic atlas of the rat brain

1967 • 4,710 citations

Identification of two related pentapeptides from the brain with potent opiate agonist activity

1975 • 3,780 citations

A Method for the Combined Staining of Cells and Fibers in the Nervous System

1953 • 1,712 citations

Isolation of an endogenous compound from the brain with pharmacological properties similar to morphine

1975 • 981 citations

An endogenous morphine-like factor in mammalian brain

1975 • 393 citations

Morphine-like ligand for opiate receptors in human CSF

1975 • 281 citations