Stimulation of proliferation ofTetrahymena pyriformis by trace rare earths |
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Authors: | Ren-Huan Tang Min-Min Su Tong-Geng Cao Yuan-Fang Liu |
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Institution: | 1. Department of Technical Physics, Peking University, Beijing, China 2. Department of Biology, Peking University, Beijing, China
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Abstract: | Using two Chinese strains ofTetrahymena pyriformis, S1 and BJ4, as the biological models, the effects of lighter rare earths (lanthanum, cerium, praseodymium, neodymium, samarium, and europium), representatives of heavier rare earths (yttrium and thulium), and mixed rare earths were studied. The stimulation of population growth ofTetrahymena in peptone-glucose media containing trace amounts of these elements have been observed. The mechanisms for the beneficial effects of rare earth elements in low concentrations remains to be discovered. |
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