Variations in Survival Time after Whole-Body Radiation at Two Times of Day

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Science  25 Jan 1963:
Vol. 139, Issue 3552, pp. 349
DOI: 10.1126/science.139.3552.349


Rats, anesthetized with sodium pentobarbital, given 900 roentgens of x-radiation over the entire body, survived more than 130 days when the radiation was given in the morning. The same dosage killed all the animals within 13 days when the radiation was given at night.