The HIV virus breaks down the genetic code of cells used by our immune system , particularly the cells known as CD4 cells, and then uses the raw genetic material to make copies of itself.

艾滋病毒坏了遗传密码的细胞用我们的免疫系统，尤其是细胞被称为CD4细胞，然后使用原始遗传材料，使自身拷贝。

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Novavax's bird flu vaccine uses particles that mimic the size and shape of the virus, which trigger an immune response but lack the genetic material to replicate.

诺华发明的禽流感疫苗利用了模拟病毒大小和形状的颗粒，这足以激发免疫应答但并不含有病毒复制需要的遗传物质。

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In this paper the research on immunity of the red-cell material base, immune function of erythrocyte, influencing factor and other research hotspots in recent years were mainly elucidated.

对红细胞免疫的物质基础、功能、影响因素及近年来对红细胞免疫研究的热点问题作一综述。

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Most importantly, when the drug-treated mice were later presented with other types of foreign material their immune systems responded rapidly.

ECONOMIST: Breaching the body's defences

On occasion, the immune system is primed to attack the embryo because it contains genetic material from the father, which can be interpreted as foreign.

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