Sensitization of Aspergillus flavus spores to gamma radiation by halogens

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Abstract
Survival curves for spores of Aspergillus flavus Link var. columnaris Raper and Fennell were obtained after their irradiation with gamma rays in the presence of Na+, K+, and Ca2+ halogens. Halogens of Na+ and K+ sensitized the spores to the radiation and enhanced sensitization occurred as the dose of radiation was increased. Halogens of Ca2+ protected the spores against a radiation dose of 25 krad but at higher doses although CaCl2 was protective, CaBr2 and CaI2 were radiosensitizers, with CaI2 the most efficient radiosensitizer.

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