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RADIATION INJURY REPARATION RATE LOSS AS A CHARACTERISTIC FEATURE OF ACUTE RADIATION SICKNESS IN REPEATED IRRADIATION

V.A. Rezontov

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Abstract

Dogs (39) that survived whole-body Co/sup 60/ gamma irradiation in a dose of 300 rads (LD-10/30) were subjected to a second dose of 300 rads at different periods (1 1/2, 2 1/2, 5, and 15 months) after the first exposure. The phases of development of the postirradiation myelopoietic hypercompensation effect were assessed. In all the cases repeated radiation sickness ran a more severe course. The radiation sickness recovery rate was 2-3 times slower in comparison with the first radiation exposure. (auth)

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Dogs (39) that survived whole-body Co/sup 60/ gamma irradiation in a dose of 300 rads (LD-10/30) were subjected to a second dose of 300 rads at different periods (1 1/2, 2 1/2, 5, and 15 months) after the first exposure. The phases of development of the postirradiation myelopoietic hypercompensation effect were assessed. In all the cases repeated radiation sickness ran a more severe course. The radiation sickness recovery rate was 2-3 times slower in comparison with the first radiation exposure. (auth)

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Available abstract

Dogs (39) that survived whole-body Co/sup 60/ gamma irradiation in a dose of 300 rads (LD-10/30) were subjected to a second dose of 300 rads at different periods (1 1/2, 2 1/2, 5, and 15 months) after the first exposure. The phases of development of the postirradiation myelopoietic hypercompensation effect were assessed. In all the cases repeated radiation sickness ran a more severe course. The radiation sickness recovery rate was 2-3 times slower in comparison with the first radiation exposure. (auth)

Key concepts: Radiation sickness, Irradiation, Acute Radiation Syndrome, Radiation, Radiation injury, Nuclear medicine, Dose rate, Radiation exposure

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