Abstract
Summary
1. A method is described whereby the alpha-particle radioactivity of uranium can be utilized to follow its course in the body. 2. Four hours after the intravenous injection of a minimal lethal dose of uranium nitrate (5.0 mg/kg) practically none of the injected heavy metal can be detected in the blood plasma. 3. Within the first 24 hours after the intravenous injection, approximately 2/3 of the uranium is eliminated in the urine. 4. Similar tracer studies have been applied to dogs protected by sodium citrate injections, but no satisfactory data have been obtained to explain the manner in which sodium citrate protects against a lethal dose of uranium nitrate.
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