1. Department of Membrane Biochemistry, Walter Reed Army Institute of Research, Washington, District of Columbia 20307;
2. National Stroke Prevention Foundation, Bethesda, Maryland 20814;
3. Department of Anesthesia, Center for Experimental Therapeutics and Reperfusion Injury, Brigham and Woman's Hospital, Harvard Medical School, Boston, Massachusetts 02115;
4. Epilepsy Research Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland 20892; and
5. Department of Physiology, Uniformed Services University of the Health Sciences, Bethesda, Maryland 20814