1. Departments of Ophthalmology and Visual SciencesWashington University School of Medicine St. Louis Missouri 63110 USA
2. Biochemistry and Molecular BiophysicsWashington University School of Medicine St. Louis Missouri 63110 USA
3. National Eye InstituteNational Institutes of Health Bethesda Maryland 20892 USA
4. MetaMorphix, Inc. Baltimore MD 21227 USA
5. Cell Biology and PhysiologyWashington University School of Medicine St. Louis Missouri 63110 USA
6. GeneticsWashington University School of Medicine St. Louis Missouri 63110 USA