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Risk Assessment – History and Future

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<strong>Risk</strong> assessment: non-threshold effect,<br />

e.g. DNA-reactive carcinogens<br />

Dose-response extrapolation<br />

100<br />

10<br />

Region of<br />

acceptable<br />

risk<br />

Region of<br />

experimental<br />

data<br />

% Response<br />

1<br />

0.1<br />

0.01<br />

0.001<br />

Multi-stage<br />

One hit<br />

Weibull<br />

Log-normal<br />

0.0001<br />

0.00001<br />

0.00001 0.0001 0.001 0.01 0.1 1 10 100<br />

Dose (mg/kg/day)

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