变形链球菌族（MS）是目前公认的致龋菌，其中与人类龋病发生关系密切的是变形链球菌和茸毛链球菌。
Mutans streptococci (MS) are the primary cariogenic agents, and Streptococcus mutans and Streptococcus sobrinus are believed to have the closest relationship with human caries.
本文以大肠杆菌为参照，对变形链球菌和血链球菌ATP酶的基因结构进行比较，探讨口腔致龋菌的质子移位膜ATP酶的结构特性。
In order to understand the genetic structure of F-ATPase of S. matans, we discuss the structure of F-ATPase of E. coli, S. matans and S. sanguis.
方法：用液体稀释法测定纳米载银抗菌剂对变形链球菌和白色念珠菌的最小抑菌浓度、最小杀菌浓度；
Observation on Impact Srength was made on the influence of PMMA denture base with silver-containing antimicrobial agents of nanometer.
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