Radiation Carcinogenesis at Low Doses

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Science  14 Jan 1972:
Vol. 175, Issue 4018, pp. 200-202
DOI: 10.1126/science.175.4018.200


An analysis of experimental findings indicates that the induction of a manmmary neoplasm in the Sprague-Dawley rat is dependent on the action of radiation on more than one cell. Although a linear relation between incidence and x-ray dose might be consistent with available data, such a relation would be fortuitous and linear extrapolation to lower doses is unjustified.