1. From the Departments of Neurosciences Division of Research,2Ophthalmology, and
2. From the Departments of Neurosciences Division of Research,3Present affiliation: Department of Biology, Pennsylvania State University, 221 Life Sciences Building, University Park, PA 16802.
3. From the Departments of Neurosciences Division of Research,
4. Medicine Division of Rheumatology and Immunology, Medical University of South Carolina, Charleston, South Carolina; and5Medical Research Service, Ralph H. Johnson VAMC, Charleston, South Carolina.