脑包虫病患者血清抗棘球蚴虫抗体阳性率为()
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脑包虫病患者血清抗棘球蚴虫抗体阳性率为()
- A: 10%~20%
- B: 20%~30%
- C: 30%~40%
- D: 50%~60%
- E: 60%~90%
请帮忙给出正确答案和分析,谢谢!