1. any of several hemolysins derived from strains of streptococcus. 
   来自链球菌系的溶血素。
2. an infection of the oral pharynx and tonsils by streptococcus. 
   由于链球菌所导致的喉咙扁桃体感染。
3. an enzyme produced by some hemolytic strains of streptococcus that dissolves fibrinous secretions from infections; used medicinally (often in combination with streptokinase). 
   由溶血性链球菌产生的一种酶，用以溶解由感染引起的纤维蛋白的分泌物，在医学上常与链激酶一起使用。
4. An acute disease of the skin and subcutaneous tissue caused by a species of hemolytic streptococcus and marked by localized inflammation and fever. 
   丹毒由一种溶血性链球菌引起的皮肤或皮下组织突发性疾病，其症状是局部发炎和发烧
5. A nonmotile, gram-positive bacterium(Streptococcus pneumoniae) that is the most common cause of bacterial pneumonia, associated with meningitis and other infectious diseases. 
   肺炎球菌一种非游走的革兰氏阴性细菌（肺菌链球菌），是细菌性肺炎最常见的致病原因，并与脑膜炎和其它传染性疾病有关

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