方法从纳豆芽胞杆菌中分离纯化基因组DNA ，作为模板通过PCR扩增纳豆激酶原基因。
Methods Chromosome DNA was isolated from Bacillus natto . The pro nattokinase gene was then amplified from chromosome by PCR.
方法从纳豆芽胞杆菌中分离纯化基因组DNA ，作为模板通过PCR扩增纳豆激酶原基因。
Methods Chromosome DNA was isolated from Bacillus natto . The pro nattokinase gene was then amplified from chromosome by PCR.
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