Commensal bacteria protect against invading pathogens using many strategies. In this issue of Cell Host & Microbe, Paharik et al. (2017) find that a commensal blocks Staphylococcus aureus colonization by producing a signal to shut down virulence.

中文翻译：

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交叉线：种间干扰阻止病原菌定殖

共生细菌使用多种策略来防止入侵的病原体。在本期《细胞宿主与微生物》中，Paharik等人。（2017）发现一个共鸣通过产生关闭毒力的信号来阻止金黄色葡萄球菌定植。