该研究首次显示在泰国1月龄和2月龄的猪中存在抗戊型肝炎病毒的血清阳性。
This is the first study which showed seropositive for anti-HEV in pigs 1 and 2 months old in Thailand.
三只免疫小鼠的抗血清的滴度要比阳性血清高。
The astite titer of antiserum in three immune mice is much higher than that of positive serum.
通过乳胶测试，两个脑脊液标本对脑膜炎奈瑟菌血清群呈阳性反应。
Two cerebrospinal fluid specimens have tested positive for Neisseria meningitidis serogroup by latex test.
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