| Affiliation: | (1) Department of Animal, Dairy & Veterinary Sciences, Utah State University, 84322 Logan, Utah, USA;(2) Present address: Laboratory of Immunobiology, National Cancer Institute, National Institute of Health, Blds. 37, 20205 Bethesda, Maryland, USA;(3) Present address: Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Veterinary Hospitals Building, 55108 St. Paul, Minnesota, USA;(4) Present address: Department of Maxillo-Facial and Plastic Surgery, Klinikum Steglitz, Free University of West Berlin, D-1000 Berlin 45, West |
