Abstract
Summary
The incidence of vomiting among 33 dogs receiving from 300 to 800 r is reported. All 12 dogs exposed to 800 r vomited within 2 hours after completion of the irradiation. The 50% vomiting dose was 540 r. No dog subjected to bilateral destruction of the emetic chemoreceptor zone vomited after 800 r exposure. The significance of these findings is discussed.
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