Ocular Immunology and Angiogenesis Lab, University of Missouri, Columbia, MO 652011, USA. Department of Biomedical Sciences, University of Missouri, Columbia, MO 652011, USA. Ophthalmology, Harry S. Truman Memorial Veterans' Hospital, Columbia, MO 652011, USA. Surgery, University of Missouri, Columbia, MO 652011, USA. Singapore Eye Research Institute, Singapore 169856, Singapore. Mason Eye Institute, School of Medicine, University of Missouri, Columbia, MO 652011, USA.