97 MR. HARRIS: y se have done some work in the last few years on mice given single doses of radiation extending from 12-1/2 roentgens on up to 5 and 6 hundred, and those mice were kept and examined periodically for a priod of tw years. We have done this with x-rays as a control for neutron experimentation. We are in the process of pulling it all together at the present time. In my recollection of the last time I looked at this data to try to pull something out Alderson Reporting Company Washington, D. C. of it, the formation of not true cataracts, but detectable 10 lens aberrations in the region of the posterior pull of the 11 lens probably in most cases is non-vision disturbing if we 12 knew what was vison disturbing in mice. . There is a definite correlation with the formation 13 14 of these opacities, and the dose that the animals had. To 15 the best of my recollection this correlation with opacity 16 is better, and the incidence of opacity formation is higher 17 than is the incidence of leukemia in animals. 18 might be reasonable to continue some studies on these Therefore, it 19 people for the detection of these lens aberrations and even 20 before you would think of looking for leukemia. 21 As far as leukemia in the animals was concerned, it is going to be awfully difficult to analyze statistically 23 ARC because/a fair leukemia incidence in the normal population of this mouse, 25 - FP - waive Pde I do remember that there is a shift in incidence of leukemia . ad net - a! The same way with other types of carcinoma.