在鸡身上观察到，一种叫滤过性病原体的病毒，很少能从它诱发的恶性肿瘤中恢复过来。

As observed with the chickens, the filterable agent, a virus, could seldom be recovered from the malignant tumor which it had induced.

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机体通过组成免疫系统的各种效应细胞和分子抵抗感染性病原体、它们的毒素及其引起的损害。

The body is protected from infectious agents, their toxins, and the damage they cause by a variety of effector cells and molecules that together make up the immune system.

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尽我们所知，本次会议将是就这个非常重要的抗菌性病原体议题展开国际对话的一个重要里程碑。

To the best of our knowledge, this meeting would represent an important milestone in international dialogue on the subject of this very important antimicrobial-resistant pathogen.

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