Collaborators

Collaborators E. C. Appleby Royal Veterinary College London England K. W. Head Royal (Dick) School of Veterinary Studies Edinburgh Scotland W. I. B. Beveridge Consultant, World Health Organization Geneva Switzerland D. Bostock School of Veterinary Medicine Cambridge England H. Casey Armed Forces Institute of Pathology Washington, DC USA E. Dahme Veterinary Faculty University of Munich Federal Republic of Germany K. Frese Institute of Veterinary Pathology Justus Liebig University Giessen Federal Republic of Germany W. C. Hall US Army Medical Research Institute for Infectious Diseases Fort Detrick, MD USA J. F. Hampe Pathological Department University of Amsterdam Netherlands T. Hanichen Veterinary Faculty University of Munich Federal Republic of Germany B. Hauser Institute of Veterinary Pathology University of Zurich Switzerland R. 0. van der Heul Medical Faculty University of Rotterdam Netherlands W. F. H. Jarrett Veterinary Hospital Glasgow Scotland C. H. Kircher University of Connecticut Storrs, CT USA A. Lagac6 Universite de Montreal Quebec Canada K. McEntee New York State College of Veterinary Medicine Ithaca, NY USA L. J. Mackey Veterinary Hospital Glasgow Scotland V. N. Milouchine World Health Organization Geneva Switzerland W. Misdorp Netherlands Cancer Institute Amsterdam Netherlands S. W. Nielsen University of Connecticut Storrs, CT USA A. L. Parodi Ecole nationale v6t6rinaire Alfort France - 142 INTRODUCTION W. Ponomarkov Cancer Research Centre Moscow USSR F. R. Robinson Armed Forces Institute of Pathology Washington, DC USA J. von Sandersleben Veterinary Faculty University of Munich Federal Republic of Germany L. H. Sobin World Health Organization Geneva Switzerland H. Stunzi Institute of Veterinary Pathology University of Zurich Switzerland E. Weiss Institute of Veterinary Pathology Justus Liebig University Giessen Federal Republic of Germany 143