据美国 Nova 药品公司最近宣称,从牛乳中获得一种新的生长因子,在培养哺乳类动物细胞包括杂交瘤细胞的培养基中加入2.5%的这种生长因子,可使培养基中原先使用的血清浓度从10%减至1%,而细胞仍保持同样的生长曲线。由于使用预先筛选的血清每立升价190美元,因此使用生长因子意味着大幅度降低培养基的成本。 According to the recent announcement by Nova Pharmaceuticals, Inc. that a new growth factor is obtained from milk and 2.5% of this growth factor is added to the medium in which mammalian cells, including hybridomas, are cultured, the previously used The serum concentration was reduced from 10% to 1%, while the cells maintained the same growth curve. Using pre-screened sera costs $ 190 per liter, the use of growth factors means a substantial reduction in media costs.