本实验中,从病死鸡组织病料中分离到一株H5N1亚型AIV,鸡胚半数致死量(50%egg lethal dose,ELD(50))滴度为10~(-7.67)/0.1ml。
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The onset among the cases in elderly group was atypical. The titer of autoantibody was low.
老年组起病不典型,自身抗体阳性率较低.
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Titer and avidity of serum antibody to Porphyromonas gingivalis before and after periodontal therapy
牙周治疗前后血清抗体滴度及亲和性的变化
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GAT可测的抗D(IgG)最高效价为1∶256,反应灵敏度明显高于试管法,而近似于聚凝胺法。
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方法:采用Balb/c小鼠作为免疫实验动物,经后腿胫骨前肌免疫2次,ELISA法检测血清乙型肝炎表面抗体(抗-HBs)效价;
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The titer is respectively enhanced by about 14 % and % after adding potassium and cobalt.
培养基中添加钾和钴分别提高效价约14%和%,添加铜会抑制红霉素的生物合成.
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