This has allowed the development of a balanced - lethal system for the expression of heterologous antigens in vaccine strains using vectors containing the wild - type asd gene from s . typhimurium and asd mutant salmonella hosts Sds一page和westem一blot检测表明，菌苗侯选株能够分别表达出相对分子质量为64kda的尿素酶b蛋白与77kda的尿素酶b和热休克蛋白a的融合蛋白。
Dynamic space observation includes : the relationship between the direction of man ' s movement and linear quality of the space , and the observation of heterologous space and composite space in various space units during man ' s continuous movement 动态空间体验具体包括：人的运动方向与空间轴向性的关系；以及人在连续运动中对多个空间单元异质空间和复介空间的体验。
The sequence of ctla4 extracellular domain determines its space construction and binding specific with its ligand . without heterologous dna , the function of protein of ctla4 extracellular domain will be more identical to that of natural ctla4 theoretically Ctla4胞外区dna的表达蛋白由于不含有外源dna表达产物，理论上与天然ctla4蛋白的功能更为一致，也减少了额外dna表达产物的副作用。
As heterologous probe and subsequently show to code for desired enzymatic activity . after a serial of subcloning coupled with southern hybridization and enzymatic activity assay , the functional s . griseus atcc14811 cholesterol oxidase gene ( chog ) was localized onto 2 . 3kb ecori - sall fragment 对phz1140和phz1141进行bamh及bgl的酶谱分析及与choa探针的杂交，将胆同醇氧化酶基因初步定位在8 . 8kbbamh和9 . 9kbbgl片段上。
Because lung cancer cells may have some special hormone ( heterologous hormone ) , and antigen enzyme , the role of these substances in the operation of bone joints , a result of bone and joint swelling pain , often involving the tibia , recife , ulnar and radial and bone and joints , often terminal expansion toes were clubbed fingers , x - ray radiography examination showed periosteal proliferation 由于肺癌细胞可产生某些特殊的内分泌激素（异源性激素） 、抗原和酶，这些物质运转作用于骨关节部位，而致骨关节肿胀疼痛，常累及胫、腓、尺、桡等骨及关节，指趾末端往往膨大呈杵状指， x线摄片检查可见骨膜增生。
Ie protein have multiple functions , such as conversion of the host cell into a metabolically activate states , activation of viral early genes in the early phase , repression of their own transcription . ie 180 proteins can stimulate transcription from both homologous such as the icp4 of hsv ( herpes simplex virus ) and heterologous viral and cellular promoter such as - globe protein 经分析伪狂犬病病毒立即早期蛋白( immediate - earlyprotein180 , ie180 )的蛋白质结构，发现ie180具有转录激活因子的结构特征，能与类rna聚合酶结合， ie180基因缺失突变体对sv40及cmv启动子调控作用的研究，是考察ie180能否作为转录激活因子应用的关键。
The feasibilities of lactobacillus casei used as oral vaccine carrier were investigated in terms of the safety , the survival properties in imitative gastrointestinal environments , the ability of colonization in intestinal tracts , and the heredity stability of heterologous gene in lactobacillus casei 摘要通过口服干酪乳杆菌安全性、胃液及胆汁酸耐受能力、肠道定植能力及外源基因在干酪乳杆菌中的遗传稳定性等实验，对干酪乳杆菌作为递呈疫苗抗原活菌载体的可行性进行了研究。
On the other hand , our previous studies have shown that the nr2b construct with a gfp tag in its n - terminus cotransfected with nr1 subunit can reach the cell surface and be detected by surface staining with anti - gfp antibody in live cells . the nr2b construct will be retained in the endoplasmic reticulum ( er ) when expressed alone in heterologous cells 我们以往的研究表明，用绿荧光蛋白( gf内在信号肤下游n末端标记nrzb亚单位，与nri共转染时能形成与野生型相似的nmda受体通道，且可以通过抗gfp抗体标记活细胞膜表面表达的nmda受体复合物。
