Arthur C. Upton

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Although the biological effects of large doses of ionizing radiation are predominantly harmful, low-to-intermediate doses have been observed to enhance growth and survival, augment the immune response, and increase resistance to the mutagenic and clastogenic effects of further irradiation in plants, bacteria, insects, and mammals. The existence of these(More)
Previous experiments have shown that myeloid and lymphoid leukemia may be induced in mice of the RF strain by exposure to whole-body ioniz ing radiation (5, 26, 28, 29). These studies also indicated that the rates of induction of the two types of leukemia varied with the dose of radiation and also with the sex and physiological status of the exposed animal.(More)
BACKGROUND The use of mammography has increased rapidly over the last decade. The justification for mammographic examinations is the potential benefit they provide in detecting breast cancer at an early stage and reducing mortality. However, this benefit must be balanced against the associated potential risk of radiation carcinogenesis, economic costs, and(More)