Abstract
Summary
Phytopharmacological experiments on samples of blood obtained from normal animals before and after their exposure, respectively, to various doses of Roentgen rays revealed that they contain a substance which inhibits root growth. This substance may be detected a few hours after irradiation but is found in largest amounts 24 hours later. The effect of irradiation of different parts of the animal body on the toxicity of the blood, the possibly antidotal effect of some chemical compounds and the clinical aspects of the subject in human beings are still under investigation.
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