Contributors D. M. Altman, B.Sc. Ph.D.

The Medical School, University of Bristol, Bristol, England

Laure Aurelian, Ph.D. University of Maryland School of Medicine and

The Johns Hopkins Medical Institutions, Baltimore, Maryland

W. A. Blyth, M.Sc., Ph.D. The Medical School, University of Bristol, Bristol, England

Te-Wen Chang, M.D. Tufts University School of Medicine, Boston, Massachusetts

Chandler R. Dawson, M.D. Francis I. Proctor Foundation, University of

California/San Francisco, San Francisco, California

Jay S. Epstein, M.D. National Center for Drugs and Biologics, Food and Drug

Administra,tion, Bethesda, Maryland

C. K. Y. Fang, Ph.D. Yale University School of Medicine, New Haven, Coranecticut

Ole Hammerberg, M.D. McMaster University Medical Center, Hamilton, Ontario, Canada,

D.A. Harbour, B.Sc., Ph.D. The Medical School, University of Bristol, Bristol, England

T. J. Hill, B.V.Sc., Ph.D., M.R.C.V.S. The Medical School, University of Bristol, Bristol, England

G. D. Hsiung, Ph.D. Ya,le University School of Medicine, New Haven, Connecticut

Ronald E. Keeney, M.D. Department of Clinical Investigation, Burroughs- Wellcome Co..

Research Triangle Park, North Carolina

M. L. Landry, M.D. Yale University School of Medicine, New Haven, Connecticut

Chien Liu, M.D. Unive-sity of Kansas Medical Center, Kansas City, Kansas

D. R. Mayo, Sc.D. Yale University School of Medicine, New Ha,ven, Connecticut

H. Cody Meissner, M.D. New England Medical Center, Boston, Massachusetts

Zuher M. Naib, M.D. Emory University School of Medicine, Atlanta, Georgia

Gerald V. Quinnan, Jr., M.D. National Center for Drugs and Biologics, Food and Drug

Administration Bethesda,, Maryland

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Contributors William E. Rawls, M.D.

MeMaster University Medical Centre, Hamilton, Ontario, Canada

Minclell Seidlin, M.D. National Institute of Allergy and Infectious Diseases.

National Institutes of Health, Bethesda, Maryland

Sharon R. Snavely, M.D. University of Kansas Medical Cente,r, Kansas Citlg, Kansas

Stephen E. Straus, M.D. Natio,nal Institute of Allergy and Infectious Diseases,

National Institute of Health, Bethesda, Maryland

A. Whitby, B.Sc., Ph.D. The Medical School, University of Bristol, Bristol, England

Sallie J. Wilson, B.S. Department of Clinical Investigation, Burroughs-Wellcome Co.,

Research Triangle Park, North Carolinu

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