Effects of Heavy Particle Irradiation on Acute Mortality and Survival Time in the Mouse

Abstract
The 28-day mortality rate was determined for female CF1 mice given B10-enriched borax or Li6-enriched LiCl intravenously and exposed 5 minutes later to graded doses of total-body thermal neutron radiation. The LD50 values were as follows: 25[mu]g of B10/g, 1.30 [plus or minus] 0.11 x 1012 n/cm2; 33.3 [mu]g of Li6/g 0.84 [plus or minus] 0.04 x 1012 n/cm2; thermal neutrons alone, 4.77 [plus or minus] 0.14 x 1012 n/cm; and cobalt-60 gamma-radiation, 789 [plus or minus] 30 r.

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