sample="quota" bates="80630953" isource="ll" decade="1960" class="ni" date="19670622" COPY June 22, 1967 Dr. Herbert Levine Department of Diagnostics Montdiore Hospital and Medical Center Bronx, New York Dear Doctor Levine, Thanks very much for your willingness to examine the results of my animal study. It really is necessary to keep this work in confidence at present. I have tried to keep my description broad, and hopefully, clear. It would be of value to know the significance of the differences between using the additive ( code and not, in two respects: 1) The production of fibrossarium alone 2) The production of the total numbers of malignant tumors Very truly yours, COPY Perry D. Hudson, M.D. FFH:fp