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Radiation Exposure Effects in Humans - Department of Energy ...

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Estimat<strong>in</strong>g Hereditary Risks<br />

• Doubl<strong>in</strong>g Dose Method<br />

– Dose required to double spontaneous mutations<br />

– Estimated to be 1 Gy for low dose rate exposure <strong>in</strong><br />

humans (based on mice data)<br />

• Direct Method (<strong>in</strong>cidence <strong>of</strong> disorders observed<br />

<strong>in</strong> the first generation)<br />

• No statistically significant <strong>in</strong>dicators <strong>of</strong><br />

hereditary effects have been observed <strong>in</strong> the<br />

progeny <strong>of</strong> atomic-bomb survivors<br />

18

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