A vaccine may also give us passive immunity by providing B cells taken from an animal or a human to play the same role.

疫苗也可以通过提供取自动物或人身上的B细胞来发挥同样的作用，从而使我们获得被动免疫。

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Work in animal models indicates that B cells also may help promote immune tolerance.

但动物模型研究显示B细胞在促进免疫耐受中可能也起作用。

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Gene "B" makes an animal care only for itself.

基因B让动物只关心自己。

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Gene "B" makes an animal care only for itself.

基因B让动物只关心自己。

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People who eat no animal foods run the risk of nutritional deficiencies such as a lack of vitamin B-12, iron and zinc and the powerful Omega-3 fatty acids found in fish, she said.

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