Production, purification and characterization of taxol and 10DAB III from a new endophytic fungus Gliocladium sp. isolated from the Indian yew tree, Taxus baccata - Sreekanth, D; Syed, A; Sarkar, S; Sarkar, D; Santhakumari, B; Ahmad, A; Khan, I (J Microbiol Biotechnol, 2009)