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Introduction Micropropagation, a plant tissue culture technique, has contributed to producing virus-free, genetically supe-rior plantlets. However, its commercial application is still limited due to its relatively high production costs. The high costs are… 相似文献
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Ansamitocin, a group of novel maytansinoid antibiotics with antitumour properties from Nocardia 总被引:1,自引:0,他引:1
E Higashide M Asai K Ootsu S Tanida Y Kozai T Hasegawa T Kishi Y Sugino M Yoneda 《Nature》1977,270(5639):721-722
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