Methods LMWHAs were prepar the by hydrogen peroxide degradation and by hyaluronidase degradation, the chicken chorioallantoic membrane (CAM) model was used to test the angiogenesis effects of LMWHAs.

• 方法采用过氧化氢氧化降解和透明质酸酶酶解的方法制备LMWHA，利用鸡胚绒毛尿囊膜(CAM)模型观察LMWHA对血管生成的影响。