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现在引人注意的非病原性真菌产生的低分子毒性物质是细胞毒B。此物质是Aldrldge等1967年从Helminthosporium(长蠕孢属)中的dermatioideum的培养滤液中和细胞毒A一起分离出来的。它是构造已肯定的真菌代谢产物,其构造见下图:
Low-molecular-toxic substances that are now noticeable by non-pathogenic fungi are cytotoxic. This material was isolated from cytotoxic A by Aldrldge et al. In 1967 from the culture filtrate of dermatioideum in Helminthosporium. It is constructed has been identified fungal metabolites, the structure shown below: