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  • Title: Macbecins I and II, new antitumor antibiotics. II. Isolation and characterization.
    Author: Muroi M, Izawa M, Kosai Y, Asai M.
    Journal: J Antibiot (Tokyo); 1980 Feb; 33(2):205-12. PubMed ID: 7380730.
    Abstract:
    New antitumor antibiotics, macbecins I and II, were isolated from the culture broth of Nocardia sp. No. C-14919. Macbecins I and II belong to the ansamycin group and have a benzoquinone and hydroquinone nucleus, respectively. Both showed antitumor activity against murine leukemia P 388 in vivo.
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