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甘油如何保菌

更新时间: 2020-07-15 00:00:00     

1、将要保存的菌种接种于LB液体培养基中至对数生长期;

2、将甘油稀释至浓度为百分之五十;

3、将甘油、2毫升离心管、枪头等试验用品于121度灭菌20分钟;

4、无菌条件下将菌液与百分之五十浓度甘油1比1等体积混合于离心管中,甘油终浓度为百分之二十五;

5、将菌种和甘油的混合液于零下20度的冰箱内保存。

关键词: 甘油 如何

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