SINGLE CELL CLONING OF TOBACCO GROWN GALL TUMOUR STRAIN 702 AND ITS PLANT REGENERATION MORPHOLOGY AND ANATOMY OF BOSCHNIAKIA ROSSICA TUMOUR BODY The Progress of Research on Ginlcgobiobal Flavone Advances in reseach on natural triterpenoids with bioactivities Antitumor effects of novel triterpene from Celastrus hypoleucus on human colorectal cancer cell line RKO in vitro