But squirrels of the same species from Alaska, where the rattlesnakes are absent, exhibit much greater sensitivity to the venom, and their serum is much less effective at neutralizing the venom.
而在没有响尾蛇分布的阿拉斯加，同一品种的松鼠对毒液的反应要剧烈的多，他们的血清中和毒素的能力也大大弱于加利福尼亚的。
The serum of the immunized ducklings were collected and the antibody titer were measured by neutralizing test.
同时对免疫的雏鸭采血，中和试验测定血清的效价。
The serum from anemic rats treated with naked plasmid expressing human EPO showed obvious neutralizing activity to inhibit the proliferation of BEF-2 cells.
在大鼠模型中，表达人EPO基因裸质粒组的血清有明显的中和活性，可抑制BEF-2细胞的增殖。
Methods We collected randomly 269 serum samples among 0-39 years healthy population and detected the polio neutralizing antibody in Ansai County.
方法随机抽样确定安塞县0~39岁人群269名，采集血清标本，检测脊灰抗体。
Methods We collected randomly 269 serum samples among 0-39 years healthy population and detected the polio neutralizing antibody in Ansai County.
方法随机抽样确定安塞县0~39岁人群269名，采集血清标本，检测脊灰抗体。
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