Method: Acetylspiramycin titer was determined by suitable glucose were added into the special culture medium of midecamycin.
方法：以麦迪（白）霉素专用培养基中加入适量葡萄糖进行效价测定。
Results The results showed that the yield, titer and purity of those McAbs were 2-4 times higher than those produced in serum containing medium.
结果无蛋白培养基中单抗的产量与效价比有血清培养的单抗高2～ 4倍，而且单抗的纯度显著提高。
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