前言： 目的：对现生产用产黄青霉菌诱变育种以获得稳定高产菌株。
Objective: To mutate breeding with Penicillium chrysogenum in existing production in order to obtain stable high yield strain.
前言： 目的：通过对产黄青霉菌的诱变选育，最后达到提高青霉素生产水平。
Object:Throngh mutagenesis and selection of producing xanthocillin, at last we improve the producing level of penicillin.
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