1. Departments of Veterinary Biosciences (Y.-P.C., I.C.B.), University of Illinois at Urbana-Champaign, Urbana, Illinois 61802
2. Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas 77030
3. Molecular and Integrative Physiology (M.K.B.), University of Illinois at Urbana-Champaign, Urbana, Illinois 61802