Affiliation: | 2. Department of Pathology Chicago College of Osteopathic Medicine, Chicago, U.S.A.;3. Department of Anatomy, Chicago College of Osteopathic Medicine, Chicago, U.S.A.;4. Department of Ophthalmology, University of Illinois Eye and Ear Infirmary, Chicago, U.S.A.;5. Department of Anatomy, Medical College of Georgia, Augusta, Georgia, U.S.A.;6. Committee on Neurobiology, University of Chicago, Chicago, U.S.A. |