US DOE ARCHIVES ~~. 326 U.S. ATOMIC ENERGY COMMISSION (OB/M) oe AlsTORIAN . ww —~ al WN aw ae co fl ) 2 ao ae Om tf . DIVISION GF BIOLOGY AND UEDICINE MONTHLY STATUS AND PROGRESS QEPORT WONTH OP MARCB 1952 in their tissues ari posaible genetic mtations. breaks (mutations) in dividing sidin celis. Thus produces radioactivity in the water in which aquatic animals live produces shanges Po32 is being added At Horth Garolina State College, a study by Dr. D. 5. Groseh is being made ef the genetic effects of ingested phosphorus. to the food of thewav eraerase, and results te date indicate that a result fram contaminated food49 being sham te produce effects on growth of offspring as Well as genetic mtatdions, tivity of Wieston Products in Animas. (WICLASSIFIED) ‘The uptake ‘praducts inte the edible tiseues and of several amount of each of these elements is retained in the not dangercus. It has been show that proteactinium, tanxtalus, and lantharam are poorly absorbed from the gastre-intestinal tract. Leas than 0.01 per cent of the body, ami thus 10 In experiments using strontiun, yearling atears were fed § or iced millicuries of 3-90, and at intervals up to six aonths were searif meat the in order to determine the activity in the tissues. Activity in lactating cows over a seven-day period, lesa t the strontiua had been eliminated by renal and feeal exeretion. In 9 ) of the milk relatively high. Seven days after intake, approximately 70 per cent of RG ingested strontium waa secreted in the milk. F § 5