细菌的

Using this model three competence-deficient pneumococci, which was identified by PCR and transformation experiment, were constructed.

自然转化是细菌之间基因转移的一种方式，肺炎链球菌是目前发现转化效率最高的一种细菌。

Frederick Griffith's experiments with the R and S stains of pneumococci showed that an as yet unknown material

Frederick Griffith对粗糙和光滑的肺炎球菌实验表明，不确定的某种物质可以从一组细菌转移到另一种细菌中。

But their regulatory function in symbiosis between legume and rhizobia remained unknown.

转录因子是细菌中很重要的一类转录因子，参与细菌各种不同生物过程的调控，但它们在共生

The detec-tion rate of two kinds of bacteria in different groups, means of the bacteria count and the cariogenic cases were analyzed.

统计2种细菌在不同分组中的检出率、细菌计数平均数及不同致龋菌病例数，研究二者的致龋作用。

Objective: The aim of this study was: to quantify the cariogenic bacteria of dental plaque in the diabetic elders, compared with the healthy; to analyze the association between dental plaque bacteria and diabetic factors; to evaluate the caries risk of diabetic elders according to pathogenesis.

目的：定量比较老年2型糖尿病患者与正常人牙菌斑龋相关细菌，探讨糖尿病相关因素与牙菌斑龋相关细菌组成的关系，从病因学角度评估老年糖尿病患者的患龋风险性。

Four steady state microbial communities were established in chemostats using inocula from human feces. Three chemostats were exposed to enrofloxacin 0.2, 2, and 20 mgL^(-1, respectively for 8 days; one served as a no-drug control.

四套接种人体肠道菌群的离体恒化器模型中连续添加0、0.2、2及20mgL^(-1)恩诺沙星8d，采用细菌培养计数和PCR-DGGE方法研究细菌数量、耐药性、菌群结构和定植抗力的变化。

But if their new bacterium is at least viable, it will have 43 codons that can be re-assigned to other tasks.

不过，只要他们的新品细菌可以存活，这个细菌将有额外的43个基码可以被分配去做其他任务。

Results: 2005 to 2007 a total of 195 test water samples, the water quality of free residual chlorine and bacteriological indicators of low passing rates, total coliforms bacteria, and the total number of bacteria pass rate was 11.8%, 19.4% and 36.9%, showed that the water sources for people and livestock manure, garbage and other serious pollution.

结果：2005~2007年共检测195份水样，水质的游离余氯和细菌学指标合格率很低，总大肠菌群、粪大肠菌群及细菌总数的合格率分别为11.8%、19.4%和36.9%，表明水源受人畜粪便、生活垃圾等严重污染。

The ratios of eubacteria (EUB338) and archaea (Arch915) to DAPI were used to indicate the community richness, indicating that both eubacteria and archaea occupied higher ratio in the system.

细菌和古细菌在采油废水生物处理系统中都有很高的比例，并呈现不同的变化趋势。

Based on the result of PSI-BLAST search against GenBank Database, 38 microbial rhodopsin sequences were collected from archaea, eubacteria and eucarya. Two different phylogenetic methods were used to analyze their sequence alignment based on 7 transmembrane a-helice. The result of phylogenetic analysis shows that these microbial rhodopsins were divided into three clades.

对美国基因数据库进行PSI-BLAST搜索后，筛选了38条来自古细菌、细菌和真核生物的视紫红质蛋白质序列并进行了蛋白质结构和序列比对，并对比对结果用了邻接法和贝叶斯法进行了基于7个a螺旋跨膜结构的系统发生分析。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。