Correction: In the article “Extracellular Signal-Regulated Kinase-Regulated Microglia–Neuron Signaling by Prostaglandin E2 Contributes to Pain after Spinal Cord Injury” by Peng Zhao, Stephen G. Waxman, and Bryan C. Hains, which appeared on pages 2357–2368 of the February 28, 2007 issue, the sentence in the abstract “Selective targeting of dorsal horn microglia with the Mac-1–synapse-associated protein (SAP) immunotoxin resulted in reduced microglia staining, reduction in PGE2 levels, and reversed pain-related behaviors” should read as “Selective targeting of dorsal horn microglia with the Mac-1-SAP immunotoxin, a chemical conjugate of mouse monoclonal antibody to CD11b and the ribosome-inactivating protein saporin, resulted in reduced microglia staining, reduction in PGE2 levels, and reversed pain-related behaviors.”
