The Sodium Channel Scn8a Is the Major Contributor to the Postnatal Developmental Increase of Sodium Current Density in Spinal Motoneurons

This research was supported by National Institutes of Health Grants NS34509 (M.H.M.), HL02972 (L.K.S.), and NS24444 (K.G.B.) and a Muscular Dystrophy Association grant to Jesús Garcı́a. We thank Jesús Garcı́a for assistance in performing some of the measurements of sodium currents.

Correspondence should be addressed to Kurt Beam, Department of Anatomy and Neurobiology, Colorado State University, Fort Collins, CO 80523-1670.

Dr. Garcı́a’s present address: Department of Physiology and Biophysics, University of Illinois at Chicago, 900 South Ashland Avenue, Chicago, IL 60607.