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. Leukema 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
曲霉素A和新曲霉素B。它们是对白血病细胞,如小鼠的Leukema L-1210细胞有很强的抑制作用。它们是通过对Streptomyces FERM-P 2452(A.T.C.C. 31123)进行控制发酵生产的。