Cov kab ua kua txiv hmab txiv ntoo microbial thiab kua xab npes ntau lawm tau muab tso rau hauv kev ua haujlwm

Cov kab ntxuav cov microbial thiab ua kua xab npum ntau lawm, ua kom cov tshuab ntxuav tais diav, qhov cub tov khoom siv tshuaj ntxuav tes thiab tshuaj ntxuav tais diav