从桔梗的培养细胞或其转化细胞提取菊粉,后者再制成抗肿瘤制剂。其副作用较小培养细胞是愈伤组织或分化的根组织。转化细胞是由土壤根瘤杆菌转化所得的多毛的根组织。为获得愈伤组织,将幼芽、根、茎、叶、花或花粉等辅成薄层,然后培养于固体培养基中。使用MS,LS,Heller培养基,并加生长素2.4-D,2,4,5-T或IAA和细胞分裂素(如毛 Inulin is extracted from cultured cells or transformed cells of the Campanulaceae, and the latter is prepared into an antitumor agent. Less side effects of cultured cells are callus or differentiated root tissue. Transformed cells are hairy root tissues transformed from soil Rhizobacteria. To obtain callus, shoots, roots, stems, leaves, flowers or pollen, etc., are supplemented into thin layers and then cultured in a solid medium. MS, LS, Heller medium supplemented with auxin 2.4-D, 2,4,5-T or IAA and cytokinins