[Quantitative regularities for clinical manifestations of radiation injury in large-sized laboratory animals exposed to supralethal radiation doses Gamma-neutron and electron biological effectiveness as influenced by exposure conditions and dose distribution in the animal body]. / Kolichestvennye zakonomernosti klinicheskikh proiavlenii luchevoi bolezni u krupnykh laboratornykh zhivotnykh pri vozdeistvii izlucheniia v sverkhletal'nykh dozakh Vliianie uslovii oblucheniia i raspredeleniia doz po telu zhivotnykhna biologicheskuiu éffektivnost' gamma-neitronnogo i élektronnogo izlucheniia.

The damaging effect of gamma-neutron radiation over a wide neutron-energy range, with average values of 0.37 and 1.2 MeV, and that of electrons with an average electron energy of 25 MeV have been compared in dogs and two monkey species exposed to a broad range of supralethal doses. An analysis of absorbed dose distribution in critical organs and systems has shown the highest effect of gamma-neutron radiation with an average neutron energy of 1.2 MeV. With severity of early clinical manifestations of damage as a criterion, electrons have appeared the most effective. The radiosensitivity of animals grew in the order as follows: dog-->M. fascicularis-->P. hamadryas.

[The dependence of the biological effect of electron radiation on the pulse repetition rate. The dependence of mortality and life span in rats on the radiation dose and pulse repetition rate]. / Zavisimost' biologicheskogo éffekta élektronnogo izluchenia ot chastoty sledovaniia impul'sov. Zavisimost' smertnosti i prodolzhitel'nosti zhizni krys ot dozy izlucheniia i chastoty sledovaniia impul'sov.

Quantitative regularities have been established for mortality and life-span of rats in relation to the pulse recurrence frequency (3-2400 s-1) of electron radiation with electron energies of 25 and 50 MeV. Electrons with pulse recurrence frequencies of 600 and 1200 s-1 have shown a higher biological effectiveness.