Cesium, Therapeutic Effects and Toxicity
The aim of this entry is to resume and discuss the material currently available on therapeutic effects of cesium salts, their applications in medicine, and their toxicity.
Cesium is naturally present as the stable 133Cs in various ores and to a lesser extent in soil. The most important radioactive nuclides are 131Cs and 137Cs, with half-lives of 10 days and 30 years, respectively. Cesium enters easily into the plant and animal systems and is deposited in soft tissues. The total content of this intracellular form is very low, no more than 0.00131 g. Cesium salts are used as catalysts and for the production of special glasses and ceramics. In molecular biology, they are applied for decades for density gradient ultracentrifugation in order to isolate viral particles, subcellular organelles and fractions, and nucleic acids from biological samples.
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