查询词典 avirulent

ConclusionNano-DBM produced under the conditions of low or controlled temperature, is a kind of biomaterial which is avirulent, nonirritant, nonpyrogenic, nonimmunological reaction and reveals good biocompatibility.

结论纳米DBM可在低温或控制温度条件下制备，是一种无毒、无刺激，不含热源、不引起免疫排斥反应的生物材料，具有良好生物相容性。

When Shigella flexneri 2a 2457T is cultured at 30℃, it's phenotypically avirulent; when grown at 37℃, its virulence improves greately. There is clear evidence that the temperature-dependent expression of the virulence genes is controlled by H-NS protein.

痢疾杆菌在30℃时不具有侵袭力，37℃时毒力明显增强，已有的研究表明这种依赖于温度的毒力基因的表达受H-NS蛋白的调控。H-NS是一种重要的类核相关蛋白，在革兰氏阴性菌中普遍存在，能够调控大量基因的表达。

Five pairs of primers were designed for PCR according to five fragments of the putative virulent genes acquired by suppression subtractive hybridization between virulent strain HA9801 and avirulent strain 12 of Streptococcus suis type 2 （ SS2 ）. The five fragments were transcriptional regulator (15# and 154# fragments), amino acid permease (210# fragments), ABC transporter (9# fragments) and surface anchored protein (187# fragments).

通过猪链球菌 2 型（ Streptococcus suis type 2， SS2 ）毒力菌株 HA9801 与无毒力菌株 12#之间的抑制性差减杂交实验，获得了可能与 SS2 菌株毒力相关的 5 个基因片段，分别是转录调节子（ 15#，和 154#片段），氨基酸通透酶（ 210#片段）， ABC 转运子（ 9#片段）及表面锚定蛋白（ 187#片段）。

YI Y K Protection of tobacco plants from bacterial wilt with avirulent bacteriocin-producing strains of Pseudomonas solanacearum Journal of the Korean Societuy of Tobacco Science , 1991,2

王金生 分子植物病理学北京：中国农业出版社， 1999，康耀卫%何礼远青枯菌无毒自发突变株接种花生引起的生化变化中国油料， 1994，1

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。