Abstract
Summary
1. Experiments have failed to show any influence of body-weight on the amount of urine excreted by the rat following total-body irradiation. 2. Rats that had at all times an excess of drinking water always showed an increase in the flow of urine following exposure to 400 r. 3. If water was withheld immediately following total-body irradiation, no immediate diuresis resulted. If drinking water was allowed after being withheld for 6 hours following irradiation, polyuria then followed the polydipsia. Under these conditions, a quantitative relationship sometimes obtained between the amount of x-radiation and the increase in urine excreted. 4. Following adrenalectomy, a time lapse of at least 12 days must be allowed before an obliteration of the diuretic response to total-body x-irradiation is apparent.
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