Inhibitory Activity of Extracts from 16 Medicininal Plants against Platelet Aggregation Induced by Thrombin and Analysis of the Active Fraction from Moringa oleifera by GC-MS

• Yu JI, 
• Dongdong ZHANG, 
• Xuefei YANG, 
• Zhiyong LI, 
• Jun YANG, 
• Li WANG, 
• Yuehu WANG