Textual research of materia medica on Chinese-Tibetan medicine -Terminalia chebula, Terminalia billerica, Phyllanthus emblica Pharmacological activity of Terminalia chebula Neuro-protective effects and mechanism of Terminalia chebula extract HZ4 on cerebral infarction models Studies on the Triterpenes of Terminalia chebula Retz. Studies on scavenge of hydroxyl radical and protection of DNA damage by 5 defferent Uighur medicinal herbs Identification of the Fruit of Terminalia chebula from Its Comfusable Varieties by RAPD Analysis