Dabie@ Life shortening after single acute whole-body neutron treatments Sex Radiation Percentage life lost / 100 rad Range of percentage : shortening Days Lost / Mouse Swiss FP thermal column A.7 0-30 Mouse CF1 F weapon neutrons 4.7 M weapon neutrons 6.7 Mouse OF1 F fission neutrons Mouse RF/Un M 1~MeV neutrons Mouse RF /Un F 14-—MeV neutrons Mouse BC6F1 M Mouse RFM Species and Strain| Mouse LAF‘ F 15.6 Form of Refs. 0.19 Linear S17 8-30 0.37 linear S18 9-23 0.79 1.06 upward concave U 5 9-45 1.06 linear? v1 9-39 225 9.0-18.0 19-28 rad 0.21-0.06 convex T convex upward D 1 convex AT convex U 8 6. 7/ 9-26 fission spectrum 35.90/ 7-26 3.0-0.9 F fission spectrum 45-77 4-25 - Rat M fission spectrum 102/ 22 - ? K 8 Guinea-pig M fission spectrum 122/ 12-16 ~4 ? K 8 K 9 Mouse BALB/c a/ Pr F 42-70 9-31 0-20 Estimate derived from a first-approximete assumption of linearity “pH b/ Estimate derived from data at the smallest dose of 20 rad 0.40 the curve 3.9-1.1 - upward upward K 9