BERGE: Okay. What kind of radio biological experiments did you do or mice and rats and otherliving beings? KOHN: Well, let's see. First of all, my primary objective, or Dr. Stone's primary objective was to study the relative biological effectiveness of the synchrotron's high energy beam. Since the synchrotron took a long time to get started, we collaborated with other people in Texas and in New Yorkin doing the RBE on their high energy machines. Mycollaborator in the laboratory was Shirley Gunter, a microbiologist. Dr. Gunter went to each one of these laboratories and did her standard microbiological testing. We did standard testing in San Francisco on a million volt machine, which they no longer have, but which was runningat that time. In 1963 or so, Warren Sinclair, who was the Texas collaborator, and I wrote a review of the international literature on the relative biological effectiveness of high energy photonsand electrons. S50, we accomplished what the laboratory or at least what myinitial assignment was. I wasalsointerested in age at exposure and the late affects of radiation. It makes a difference whether you irradiate the animal when he's young or when he's old. We published a numberof papers on that, with Bob Kallman and, for example with, Paul Guttman; the last reference, on the sheet, tells about that. Then I did someclinical work on the effects of radiation therapy on the blood count. I did some work with Dr. Zippen and Mrs. Lum on breast cancer. I could talk on and on and on you know and [| don't want to do that. BERGE: Oh please do. KOHN: From mypoint of view it isn't that important. But I think