我们产生的多数抗体是与病毒表面蛋白血凝素的球状头部结合的。

Most of the antibodies we produce bind to the globular heads of a surface protein on the virus called haemagglutinin.

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“血凝素是一个诱饵”，波士顿哈佛医学院的免疫学家韦恩·马拉斯科说，“这些球状头部可以有很多变异还不对病毒产生不好的影响。”

"Haemagglutinin's a decoy," says Wayne Marasco, an immunologist at Harvard Medical School in Boston. "Those globular heads can undergo many mutations without the virus suffering any ill effects."

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