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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.Table tennis影视剧场栏目主要播出不同剧种的戏曲艺术片、电视剧及与戏曲有关的电影、电视剧，同时还有观众喜爱的热播电视剧等节目。　　反腐题材英剧《重任在肩》第六季于2017年5月获得预订，预计将于2021年在BBC1播出。本季的调查对象将是由Kelly Macdonald饰演的Joanne Davidson总督察，她在侦破一起谋杀案的过程中因采取了脱离常规的调查手段而引起了AC-12的注意。据主创Jed Mercurio透露，这个角色将会是AC-12所面临的最为神秘莫测的对手。Humans used bows and arrows for hunting activities as early as 20,000 years ago. Modern archery began in England.该喜剧以一个虚构的小镇坦布里为背景，讲述了托尼（瑞奇·热维斯饰）的故事。托尼是当地一家报社的作家，在妻子死于癌症后，他的生活发生了翻天覆地的变化。　　然而，所有四面都是无情的，陶醉于仇恨和竞争的痛苦和快乐...或许，甚至爱情