... 酵素浓度 enzyme concentration 酵素份化 enzyme fractionation 酵素免疫分析法 enzyme immunoassay; EIA ...
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... 层析（分级）分离 chromatographic fractionation 分级分离 fractionation 酶分级分离 enzyme fractionation ...
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Pure enzyme was obtained by using the salt fractionation with ammonium sulphate, the ion-exchange chromatography and the gel filtration.
使用硫酸铵分级盐析，离交色谱，凝胶过滤可获得纯净的酶。
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