Chromosome Aberration Yields in Human Lymphocytes Exposed to Fractionated Doses of Negative π Mesons

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Abstract
Human venous blood was irradiated at a dose of 200 rads to study the cytogenetic damage in lymphocytes at peak and plateau positions in a negative meson .pi. beam. Metaphases were then analyzed for fragmentation and centricity. The aberration yields, when fitted to a quadratic function predicted that no significant enhancement of the peak to plateau ratio would result from fractionation with doses used in radiotherapy.