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患儿男,6岁。半月前发热,咽喉肿痛,咳嗽,无痰。其父给予'感冒灵'服用后症状消退。1天前突发肉眼血尿,全身水肿,尿常规:RBC满视野,WBC:20/HP,Pro:++,血清补体C3降低,抗链球菌溶血素'O'滴度增高,临床诊断为肾小球肾炎。导致肾小球肾炎的病原菌是A、金黄色葡萄球菌
B、A群链球菌
C、B群链球菌
D、C群链球菌
E、D群链球菌
该菌致病物质中与肾小球发生超敏反应有关的是A、脂磷壁酸
B、肽聚糖
C、荚膜
D、M蛋白
E、F蛋白
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