1. Department of Ophthalmology and Vision Science, School of Medicine, U.C. Davis, Sacramento, California, United States
2. Department of Veterinary Surgical and Radiological Sciences, School of Veterinary Medicine, U.C. Davis, Davis, California, United States
3. Comparative Pathology Laboratory, U.C. Davis, Davis, California, United States
4. Mouse Biology Program, U.C. Davis, Davis, California, United States
5. Department of Cell Biology and Human Anatomy, U.C. Davis, Davis, California, United States
6. Department of Ophthalmology and Vision Science, School of Medicine, U.C. Davis, Sacramento, California, United States 2Department of Veterinary Surgical and Radiological Sciences, School of Veterinary Medicine, U.C. Davis, Davis, California, United States