To be successful, a pathogen must escape the many defenses of the host immune system until it can replicate and spread to another host.

病原体必须逃过宿主免疫系统的重重防御，直至能够在宿主细胞内复制及扩散到其它细胞中，才算侵染成功。

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Among the system of rice blast disease, the interaction between host and pathogen copes with gene-for-gene relationship.

稻瘟病系统中，病菌与水稻间的互作符合基因对基因关系。

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