OFFICERS OF INSTRUCTION BELLAMY, Albert W,, Ph,D., Professor of Zoology and Divisional Dean of Life Sciences, College of Letters and Science, University of California, Los Angeles, BRYAN, Fred A., MD, Associate Clinical Professor of Medicine, School of Medicine University of California, los Angeles, CASSEN, Benedict, Ph,D., Chief of the Blast Section, Divers{fiod Problems Division, Atomic Enorgy Project, University of California, Los Angeles. COPP, D. Harold, HD, Assistant Professor of Physiology, Univarsity of California, Berkeley, DESSAUER, Gorhard, Ph.D,., Research Physicist, General Electric Company, Schenectady, New York, DONALDSON, Lewren R,, Ph.D., Director, Appliod Fisheries Laboratory, Universit; of Vashington, DOWDY, Androw H,, MD, Professor of Radiology, School of Medicine, University of California, Los Angolos, FERMI, Enrico, Ph,D., Charles H. Swift Distinguished Servico Professor of Physics, University of Chicago, Chicago, Illinois. FINK, Robert, Ph.D., Rescarch Biochemist in the Department of Medical Invostigation, Birmingham Veterans Administration Hospital, Van Nuys, California, KALEY, Thomas J,, Ph,D,, Chief of the Pharmacology-Toxicology Division, Atomic Energy Project, University of California, Los Angolos, HAMILTON, Joseph G,, MD, Associate Professor of Medical Physics and Associete Professor of Experimental Medicine and Radiology, Univorsity of California, Berlccley, California, LAWRENCE, John S,, MD, Professor of Modicine, University of California, Los Angolcs, LOW-BEER, Bertrom ¥, A., MD, Associate Professor of Radiology, University of California, Modical School, Berkeley, California, LYON, Georgo M,, MD, Chief, Radioisotope Section, Research and Edwation Servico, U. &. Vetorane Administration, Washington, D. C. MAC KENZIE, Konnoth R., Ph.D., Associate Profcesor of Physics, University of California, Los Angoles, SILVERMAN, Louis B., AB, Health-Physicist, Atomic Energy Project, University of California, Los Angeles, STONE, Robert S,, MD, Professor of Radiology, Univoreity of California Medical School, San Francisco, California, WARHEN, Stafford L., MD, Professor of Biophysics and Dean of the School of Medicine, Univor sity of California, Los Angeles, Atomtc Energy Projoct, University of California, Los Angeles, co WEST, Phitip M., MD, Chiof of the Tracer Synthosis Section, Biochemistry Division,

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