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. 1969 Jul;18(1):24–30. doi: 10.1128/am.18.1.24-30.1969

Development of Radiation Resistance in Salmonella Cultures1

J J Licciardello a, J T R Nickerson a, S A Goldblith a, C A Shannon a, W W Bishop a
PMCID: PMC377877  PMID: 5803628

Abstract

Cultures of Salmonella subjected to repeated cycles of gamma-irradiation and subculture developed radiation resistance sooner at a low cycling dose (∼1% survival) compared to a high cycling dose (∼0.001% survival). Radioresistant cells in a population of radiosensitive cells of Salmonella newport or S. typhimurium could be selected by the double-irradiation plate method. The frequency of radioresistant cells in a population of S. newport was found to be about 1 per 8.9 million. Radio-resistant cells obtained by cyclic irradiation and subculture were larger (plumper) than the parent strain and showed a marked pleomorphism.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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