15:19 Dec 29, 2011 |
Chinese to English translations [PRO] Medical - Genetics | |||||||
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| Selected response from: Kun Huang China Local time: 12:41 | ||||||
Grading comment
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Summary of answers provided | ||||
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4 +1 | It is just "the compound" or any compound in question under test |
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It is just "the compound" or any compound in question under test Explanation: The "化合物" here is just "the compound" or any compound in question under test. Whether this compound can induce mutation or cancer can be tested by culturing stimulated mutated stains of Salmonella typhimurium in a selective medium which does not contain histidine. First,stimulate a series of mutated stains of Salmonella typhimurium which rely on histidine for existence with this potentially mutation- or cancer-inducing substance, i.e,"the compound". Because some nutrient-deficient species can mutate back into wild species that can compose histidine themselves, a selective medium will be able to test the compound out. (If,after some time, there is any Salmonella typhimurium existing in this originally histidine-free environment, then the compound is mutation-inducing.) |
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