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变异链球菌
    Construction of glucan-binding protein D gene inactivation mutant of Streptococcus mutans
    变异链球菌葡聚糖结合蛋白D基因失活菌株的构建和鉴定
    Preliminary Studies on Screening Interaction Proteins from Agkistrodon acutus Venom by Specific Absorption of Streptococcus mutans
    利用变异链球菌特异性吸附筛选蕲蛇毒作用蛋白的初步探讨
    Architecture of Streptococcus mutans biofilms
    变异链球菌生物膜结构观察
    Gene expression in lactate dehydrogenase of Streptococcus mutans from caries-active and caries-free individuals
    变异链球菌临床株乳酸脱氢酶mRNA水平的表达研究
    Detection of differential gene expression in biofilm-forming versus planktonic populations of Streptococcus mutans using RFDD-PCR analysis
    差异显示技术对变异链球菌生物膜基因表达差异的分析
    Cariogenecity of Streptococcus mutans isolated from children with different caries susceptibility
    不同龋敏感者变异链球菌临床分离株的致龋特性
    Objective To observe the architecture of Streptococcus mutans (S.mutans) biofilms utilizing of an experimental model of S.mutans biofilms in confocal laser scanning microscopy (CLSM).
    目的 建立变异链球菌生物膜模型 ,用激光共聚焦扫描显微镜 (CLSM)观察变异链球菌生物膜结构。
    Objective To investigate the gene expression variety of different genotype lactate dehydrogenase of streptococcus mutans derived from caries-active and caries-free individuals, and to evaluate the relationship of LDH gene expression to enzyme activity and cariogenicity of S.mutans.
    目的分析来自不同龋敏感人群变异链球菌不同基因型乳酸脱氢酶(LDH)的基因表达差异,探讨mRNA水平上基因表达与蛋白生物学功能及细菌致龋性的关系。
    Objective To construct an insertional inactivation mutant of Streptococcus mutans glucan-binding protein D for the further functional study of the protein.
    目的利用基因打靶技术构建变异链球菌葡聚糖结合蛋白D基因(gbpD)失活株,用于葡聚糖结合蛋白D基因功能的研究。
    Screening three antagonistic strains from soil among which 1~# has strongly restraining effect on Staphylococcus aureus、Bacillius subtilis、Botrytis cinerea、Streptococcus mutans、Escherichia coli. It was identified as Bacillus licheniformis.
    从土壤中筛选出3株具有抑菌活性的菌株,其中1#菌株对金黄色葡萄球菌、枯草芽孢杆菌、灰霉葡萄孢菌、变异链球菌、大肠杆菌均有较强抑制作用,初步鉴定为地衣芽孢杆菌。
    The amount of the targeted microorganisms(Streptococcus mutans,Streptococcus sobrinus,Actinomyces viscosus and Actinomyces naeslundii) and the total number of bacterial cells were determined by real-time PCR based on SYBR-Green I fluorescence.
    应用SYBR Green I模式的实时PCR技术,对各组儿童牙菌斑中4种主要致龋菌(变异链球菌、远缘链球菌、黏性放线菌和内氏放线菌)进行定量检测,并计算各致龋菌所占总菌的比例。
    Results The percentages of the four targeted bacteria in high-caries group were significantly higher than those in caries-free group(P<0.01),and there was good linear correlation between dmfs index and the sum of the percentages of Streptococcus mutans and Streptococcus sobrinus.
    对各组所获数据进行统计学分析。 结果高龋组中4种致龋菌所占总菌的比例均高于无龋组(P<0.01),其中变异链球菌和远缘链球菌的数量之和所占总菌的比例与dmfs指数具有良好的线性关系。
    Streptococcus mutans group was the predominant flora in caries-susceptive children.
    变异链球菌群是高龋组中的优势菌群。
    Objective To investigate the ability of biofilm formation and acidogenicity of Streptococcus mutans isolated from children with different caries susceptibility.
    目的探讨不同龋敏感者变异链球菌临床分离株的生物膜形成和产酸能力。
    Conclusion The high cariogenecity of Streptococcus mutans isolated from caries-susceptive children is closely related to the high ability of biofilm formation and aciduricity.
    结论高龋组变异链球菌临床分离株的高致龋力与其较强的生物膜形成能力和产酸能力密切相关。
 

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