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细菌与人类的关系是怎样的

更新时间: 2020-09-22 00:00:00     

1、相互依赖的关系,细菌离不开人类,人类对于很多细菌来说是唯一宿主,它只能在人体内寄生,不能在其他动物体内繁殖,人体内生长着很多正常菌群,特别是在肠道内,这些细菌帮助你消化食物,而且人体内的正常菌群在病原菌侵入机体时一定程度上会帮助机体抵御外来的入侵;

2、但有些细菌是引起人类疾病的罪魁祸首,它会感染人体,导致人体致病,对人的健康危害大。

关键词: 细菌 人类 关系 怎样

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