摘要 |
An anti-tumor composition containing cytotrienin (I), (II), (III) or (IV) as the active ingredient, which compounds are produced by culturing a bacterium which produces cytotrienin (I), (II), (III) or (IV), in a medium and accumulating cytotrienin (I), (II), (III) or (IV) in the medium and harvesting the product.
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