The allergen in jackfruit does not sensitize the immune system, but once birch pollen has done so, the immune system may react to jackfruit too.

菠萝蜜中的过敏原不会使免疫系统敏感，但是一旦桦树花粉刺激了免疫系统，免疫系统也会对菠萝蜜有反应。

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Scientists found that some people's immune systems could recognise parts but not all of the virus.

科学家发现，一些人的免疫系统只能识别部分病毒，而不是全部。

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Vegetarians may think that they’re immune, but they’re not.

素食主义者或许认为他们是幸免者，但事实并非如此。

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"Muslims in the U.S. are more resistant, but not immune to the radical message, " they wrote.

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