Specifically, they found the virus in hematopoietic progenitor cells (HPCs) -the mother of all immune system cells.

尤其是在定向造血干细胞(所有免疫系统细胞的母体)中找到了病毒。

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The close contact between mother and baby means she absorb the same germs that are attacking us. her mature immune system creates antibodies to kill off these bacteria.

母子之间的亲密关系意味着她们会受到相同的攻击，母亲成熟的免疫系统制造抗体，杀死了这些细菌。

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It should prompt the mother's immune system to create more antibodies to attack the whooping cough bacterium.

BBC: Whooping cough: Three more babies die in outbreak

The researchers believe that sHLA-G appears to protect the developing embryo from attack by the mother's immune system.

BBC: NEWS | Health | Test to boost IVF success rates