【摘 要】
：
The aim of this research was to determine the distribution characteristics of chromosome aberrance along the Bragg curve from heavy ion beams.The chlorella transformed by cytosine deaminase gene (CD g
【机 构】
：
Key Lab of Industrial Fermentation Microbiology(Tianjin University of Science and Technology),Minist
论文部分内容阅读
The aim of this research was to determine the distribution characteristics of chromosome aberrance along the Bragg curve from heavy ion beams.The chlorella transformed by cytosine deaminase gene (CD gene) from JM109 Escherichia coli,was screened as an engineering cell through selecting in kanamycin medium and PCR identification by CD gene.
其他文献
Optically active diaryl alcohols is an important class of chemical chiral compounds which could be applied in the synthesis of natural products,pharmaceuticals and agrochemicals,such as antihistamine,
HNH proteins are a very common small nucleic acid binding proteins generally associated with endonuclease activity and are found in all kingdoms of life.Although HNH proteins from mesophiles have been
Altemariol (AME),temariolmethylether (AOH),and altenuene (ALT) were the common mycotoxins product by Alternaria alternatain.Those mycotoxins also cause the plant disease and threat to people health.A
Clostridium acetobutylicum is a native producer of ABE (acetone,butanol and ethanol) solvents,among which 1-butanol is an important bulk chemical and also one of the most promising biofuels.The metabo
As an excellent exoelectrogen in Microbial Fuel Cell,the genomes of Shewanella were significant in exoelectrogen genomics research.In this paper,we performed a comprehensive re-annotation of protein-c
目的:探索幽门螺杆菌临床标本的最佳运送条件和最适培养基.方法:将实验菌株加入小牛血清、牛奶运送液,分别置不同温度及气体环境6h后接种于哥伦比亚血琼脂微需氧培养;将20例临床标本分别接种于MH和哥伦比亚血琼脂微需氧培养5天,比较分离效果.结果:血清中活菌数多于牛奶中活菌数,微需氧和烛缸运送下活菌数多于空气和有石蜡油覆盖的运送液中活菌数,微需氧37℃(或26℃)的血清中活菌数多于6℃下的活菌数(P＜0
沙门菌是寄生在人和动物肠道内可引起多种疾病的肠道致病菌,主要经水和食物传播.沙门菌质粒毒力基因(spy)与细菌毒力密切相关,其毒力表型主要由调节基因spvR、效应基因spvB和spvC介导.已知spvB的编码产物具有ADP核糖基转移酶活性,可诱导细胞骨架解聚.本课题组前期研究发现spvB可抑制宿主细胞自噬体的形成,但相关的分子机制尚不清楚.本研究第一部分以鼠伤寒沙门菌野生株、spvB基因突变株和回
严重的山羊流产疫病给养殖户和养殖企业造成了巨大的经济损失,引起山羊流产的因素主要有环境应激因素、管理因素、动物素质因素和传染性因素等,其中尤以传染性疫病引起的山羊流产较为突出.本试验对贵州省山羊生殖器官中主要细菌种类、分布情况和耐药性展开调查,以期为贵州省细菌性山羊流产疫病的临床诊断提供理论依据.本试验采集贵州省6个地(州、市)12个规模养羊场临床健康和发病流产山羊的胎儿、子宫和母羊的阴道棉拭子样
To investigate the difference of chromosome aberrance along the Bragg curve from heavy ion beams,we irradiated the haploid from Saccharomyces cerevisiae (logarithmic phase cells,containing cytosine de
猪溶素(SLY)是2型猪链球菌(S.suis)的分泌性毒力因子,也是一种重要的保护性抗原,它属于胆固醇依赖性细胞毒素家族(Cholesterol Dependent Cytolysin,CDC)成员.rSLYP3531突变子单一氨基酸残基替换虽未对其高级结构没有产生明显的影响,但导致其丧失溶血活性,同时突变子获得了新的生物学特性一一凝集红细胞(许凌峰等,Protein & Cell,2010;杜华