目的探讨北京蜂胶提取物对变形链球菌产酸的影响。

Objective To study the effect of proplis on the production of lactic acid from S.

youdao

目的探讨北京蜂胶提取物对变形链球菌产酸的影响。

Objective To study the effect of proplis on the production of lactic acid from S.

youdao