1·Studying the gene sequence of treponema and twocomponent regulatory systems may provide the theoretical basis for explaining the above phenomena.
研究密螺旋体的基因序列和双组分调控系统可能为解释上述现象提供了理论依据。
2·Abstract : Abstract: Oral treponema is a member of oral bacteria in the healthy periodontal tissue.
摘要 ［摘要］ 口腔密螺旋体是健康牙周人群口腔细菌的成员之一。