绝大多数的细菌有细胞壁，有些还有荚膜，要很高浓度的盐水才能杀死。口腔表面的细胞远比细菌脆弱，更容易被破坏。

来源: fuz 于 2022-11-21 18:49:19 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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