无活性变株在含VB_（12）培养斜面生长后转种到无VB_（12）培养液，也能使其产生抗菌素；

As VB12 being added into the slant medium, chuangxinmycin non-producing strains can also produce this antibiotic in fermentation medium not containing VB12.

youdao

无活性变株在含VB_（12）培养斜面生长后转种到无VB_（12）培养液，也能使其产生抗菌素；

As VB12 being added into the slant medium, chuangxinmycin non-producing strains can also produce this antibiotic in fermentation medium not containing VB12.

youdao