There are disclosed two new antibiotics formerly denominated MC916-A and MC916-B and now called neothramycin A and neothramycin B which are potent inhibitors of the growth of leukemia cells, e.g. Leukemia L-1210 cells in mice. They are produced by controlled fermentation of Streptomyces FERM-P 2452 (A.T.C.C. 31123).
公开了两种曾被称为MC916-A和MC916-B的新抗生素,现在被称为新
链霉素A和新
链霉素B,它们是白血病细胞的强效
抑制剂,例如小鼠白血病L-1210细胞。它们是通过对Streptomyces FERM-P 2452(A.T.C.C. 31123)进行控制发酵而产生的。