1. From the Center for Neuroscience and Cell Biology, Department of Zoology, the2Center of Ophthalmology of Coimbra, Institute of Biomedical Research on Light and Image (IBILI), Faculty of Medicine, and the
2. From the Center for Neuroscience and Cell Biology, Department of Zoology, the
3. From the Center for Neuroscience and Cell Biology, Department of Zoology, the3Department of Zoology, University of Coimbra, Coimbra, Portugal; and the
4. Department of Ophthalmology, The Penn State Retina Research Group, Penn State College of Medicine, Hershey, Pennsylvania.