Yu, Fei-Xue Four new steroids from the endophytic fungus Chaetomium sp. M453 derived of Chinese herbal medicine Huperzia serrata. [electronic resource] - Fitoterapia Mar 2017 - 41-46 p. digital Publication Type: Journal Article ISSN: 1873-6971 Standard No.: 10.1016/j.fitote.2016.12.012 doi Subjects--Topical Terms: Cell Line, TumorChaetomium--chemistryCholinesterase Inhibitors--chemistryHumansHuperzia--microbiologyMolecular StructurePlants, Medicinal--microbiologySteroids--chemistry