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The administration of the live vaccine prior to the killed vaccine has been shown to dramatically increase the mucosal antibody response to the killed bacterin in addition to reducing organ colonization and fecal shedding.

业已发现，死苗之前的活苗处理不仅可以减少沙门氏菌在家禽器官内的繁殖和在粪便内的释放量，而且能够明显改善粘膜对死苗的抗体反应。

To better understand the roles of LsrA protein in nodulation, a series of analyses of nodules using scanning electron microscopy, genetic and biochemical approaches have been carried out. Our analyses suggest that the lsrA1 nodules contain bacteroids in the invasion and establishing zone only. The lsrA gene expression is active early in the invasion zone and activated later than bacA genes. The lost of LsrA protein dramatically reduced the expression of nifA and fixK, and completely blocked the expression of the nifH gene for nitrogenase. LsrA protein functions early in the bacteroid development and it is essential for the development nitrogen fixing bacteroids.

前期的工作中，苜蓿中华根瘤菌Rm1021中90个候选LysR基因已经被定向插入突变，并筛选在自生生长时期、共生生长时期的表型，以期寻找更多在自生状态或共生固氮中有功能的LysR转录因子。1 针对前期鉴定出的共生固氮必需的lsrA基因，我们应用了一系列扫描电子显微镜技术、生物化学、分子遗传学等方法，发现lsrA基因主要在根瘤侵染区开始表达，表达时序也在侵染阶段左右，但晚于bacA基因表达；LsrA蛋白缺失后根瘤固氮区中缺乏具有固氮能力的类菌体，nifA和fixK基因的转录水平降低，nifH基因的转录被完全阻断，因此LsrA蛋白为根瘤发育所必需，是新的根瘤发育信号传导途径成员。2 通过表型筛选我们鉴定了苜蓿中华根瘤菌的oxyR基因，并研究了它的调节特性。oxyR突变后，苜蓿中华根瘤菌对过氧化氢敏感性提高，适应性降低。

The popularity of ATM's has increased dramatically since the early 1970's, when Citibank of New York City and Banc One of Ohio became the first financial institutions to install ATM's on a large scale.

20世纪70年代初，纽约市城市银行和俄亥俄第一银行成为最早大规模地安装自动取款机的金融机构，自动取款机的普及程度自此急剧增加。

As will be apparent from this bar chart,sales have risen dramatically.

这张柱形图清楚的表明，营业额有显著的上升。

Leaders need to be deeply reflective and dramatically explicit about core values and beliefs.

领导是核心价值和信念的捍卫者和阐释者。

Having experienced the bearish market from 2001 to 2005, china's capital market picked up its upward trend in 2006 and reached an unprecedented high. The number of investors also grew dramatically.

我国的资本市场经历了2001-2005年的熊市，在2006年重新步入了上升通道，并达到了前所未有的高度，投资者数量也爆发式的增长。

In fact , even a minimal introduction to consequences of sexual interaction ( the bird's bee's ) might have dramatically changed the lives of many people .

实际8ttt8上，最小限度的介绍性行为的后果可能 www.ssBBww.cOm 戏剧性地改变许多8ttt8人的生活。

Since winning the contest, Bianca's life has changed dramatically.

自比赛夺冠以来，碧安卡的生活有了翻天覆地的转变。

T53. Although people's lives have been dramatically changed over the last decades, it must be admitted that, shortage of funds is still the one of the bigg

t近几十年，尽管人们的生活有了惊人的改变，但必须承认，由于学费和书费日益飞涨，资

Although people's lives have been dramatically changed over the last dec ades, it must be admitted that, shortage of funds is still the one of the bigg est questions that students nowadays have to face because that tuition fees an d prices of books are soaring by the day.

t近几十年，尽管人们的生活有了惊人的改变，但必须承认，由于学费和书费日益飞涨，资金短缺仍然是学生们面临的最大问题之一。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。