Frank Porreca, Josephine Lai
& T. Philip Malan Jr.
Departments of Pharmacology and Anesthesiology, University of Arizona Health Sciences Center, Tucson, Arizona 85724, USA, frankp@u.arizona.edu
Immune cells secreting the opioid peptide -endorphin undergo selectin-mediated migration to peripheral sites of injury where they promote analgesia (pages 1425−1428).