BIOASSAY OF SELENIUM
专利汇可以提供BIOASSAY OF SELENIUM专利检索，专利查询，专利分析的服务。并且The invention relates to a plasmid carrying a selenium-specifying DNA sequence of the E. coli fdhF gene upstream the E. coli lac'Z gene which permits the incorporation of selenocystein into beta -galactosidase. Particular plasmids according to the invention are pRM2, deposited at the ATCC under No. 75594 and pRM4, deposited at the ATCC under No. 75595. The invention also relates to micro-organisms transformed with a plasmid according to the invention having selenium-dependent beta -galactosidase activity. The invention provides a method for the quantitative determination of selenium in selenium derivatives in a biological sample comprising incubating micro-organisms according to the invention in a suitable medium also containing said sample and measuring the level of beta -galactosidase activity. The biological sample may be, e.g. a blood sample or a food sample.，下面是BIOASSAY OF SELENIUM专利的具体信息内容。
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