7 je . ep oot, APPIDIn "3" (colT'p) APPEVDIX 3.2.4.5 (Cont'd) many technical problems that such a study entails. Personal communication, Dr. Cronkite AP:ENDIX 3.2.5.2 "Some of the recent work being done in Dr. Howland's Division on antibiotics suggest that they may be of considerable use {in therapy). If this is confirmed by subsequent work s proposal alonz those lines could be submitted lator.’ t University of Rochester Letter of Henry A. Blair APPENDIX 3.2.5.3 Therapcutic studics provosed by the NMS are of a very limited character, and as planned at present do not involve a large sorics of animals (perhaps 20). The attitude of the MME is similar to that adopted in I'r. Blair's letter: "lo suggestions are made to expose animals for studies of penetrating radiation (as regards therapy) because it does not seom likely that they could add anything to the results of work done under contralled laboratory conditions, There is one possible exception to this in the field of thorapys reese” Personal communication, Capt. Dracoger APPELJIX 3.5.1 "If it wero docided to study mammalian fenetic effects, it might be necessary to expose a fow more animals (than the ones for acute Icthality, otc. sec: 3.2.1.2) fomales.... providad it appeared mandatory to brecd oxposed females. This would be to avoid complicating longevity studies on surviving females through suncrimposition of obstetrical and post-partum fatnlitics on the data, There appears to be no good reason why the surviving males could not be used both for breeding and longevity studics. ....the mammals should be bred as soon after oxposure ns possible to determine the porcentage and types of mutation, and then bred later to detcrmine racovery, if any with subsequent maturation of germ ecclls. University of Chicago Proposal of Dr. Franklin C. McLean APPEMDIXCIS : 3.2.44,5 Bee Dak Bae Ded ZF Y

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