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Thromboembolic diseases are currently one of the causes that endanger human health and lead to the highest mortality rate, such as myocardial infarction, cerebral thrombosis, deep vein thrombosis, cerebral embolism, pulmonary embolism, etc. In addition, thrombosis is an important pathological process involved in the pathogenesis of many diseases. 1. Anticoagulant therapy (1) Heparin: Heparin is a commonly used anticoagulant and is a highly sulfated glucosaminoglycan. Heparin is widely found in mammalian tissues, and mast cells are the main producing sites. The main sources of medicinal heparin are bovine lung and pig intestinal mucosa. Heparin used clinically is called unfraction heparin (UFH) because it is a mixture of components with different relative molecular weights. The relative molecular weight is between 33,000 and 30,000, which is also called standard heparin (SH). The drug name is heparin sodium. (2) Low molecular weight heparin: crude heparin is cracked into some fraction with relative molecular mass of 1000 ~ 12000 by chemical or enzymatic hydrolysis methods, and then purified. There are at least 10 kinds of low molecular weight heparin prepared by different manufacturers and different methods.黄道国中，每千年将会实行君主轮换制度，眼下正值摩羯座星主北堂羿继任，而同时拥有双鱼座星主北堂棠和水瓶星主北堂墨染的北堂家族自然一时间风头无二。On the night of killing Baud, Zhao Mucheng went to the kitchen to cook, thinking that there were still a few people left. Six of the "Inner Mongolia Gang" Baud and his gang died, leaving 16 of the 33 crew members.你知道我想什么吗？我就喜欢像刚才那样逮鱼，还想去拔萝卜，做这些农人眼里极平常的事，做小时候习以为常的事。一个项目牵扯出多年前的情感瓜葛，尘封3333天的绝美恋情在失忆后重逢。然而，参与这个项目的人都有着自己的小心思，看似偶然的失忆，却不只是单纯失忆那么简单。叫姐夫的，叫姑父的，有叫爹的。