D. H. Schlaferfrom the Department of Veterinary Pathology, Department of Clinical Sciences, and Department of Veterinary Physiology, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853.
A. E. Yeagerfrom the Department of Veterinary Pathology, Department of Clinical Sciences, and Department of Veterinary Physiology, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853.
P. W. Concannonfrom the Department of Veterinary Pathology, Department of Clinical Sciences, and Department of Veterinary Physiology, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853.