蛋白质分离后，第一抗体结合于感兴趣的蛋白上。

After protein separation, a primary antibody targets the specific protein of interest.

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用肺癌患者及健康对照者的血清作第一抗体进行蛋白印迹检测。

The aliquot of proteins was subjected to SDS-PAGE, followed by Western blot analysis in which individual sera were tested for primary antibody.

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那些在记忆测试中表现良好的人，其体内的免疫球蛋白 A 水平会升高。免疫球蛋白 A 是一种抗体，是人体抵御细菌的第一道防线。

Those who did well on the memory test had an increase in levels of immunoglobulin A, an antibody that's the body's first line of defense against germs.

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One is there's no lag period, notice that antibody levels start rising right away after the second exposure.

第一是没有迟滞期,请注意,抗体浓度迅速上升,在第二次接触抗原时

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