نتایج جستجو برای: ژن viab

تعداد نتایج: 15815  

2017
Kun Xiong Chunyue Zhu Zhijin Chen Chunping Zheng Yong Tan Xiancai Rao Yanguang Cong

Enteric fever is predominantly caused by Salmonella enterica serovar Typhi and Salmonella enterica serovar Paratyphi A, and accounts for an annual global incidence of 26.9 millions. In recent years, the rate of S. Paratyphi A infection has progressively increased. Currently licensed vaccines for typhoid fever, live Ty21a vaccine, Vi subunit vaccine, and Vi-conjugate vaccine, confer inadequate c...

2013
Robert W. Crawford Tamding Wangdi Alanna M. Spees Mariana N. Xavier Renée M. Tsolis Andreas J. Bäumler

UNLABELLED Expression of capsular polysaccharides is a variable trait often associated with more-virulent forms of a bacterial species. For example, typhoid fever is caused by the capsulated Salmonella enterica serovar Typhi, while nontyphoidal Salmonella serovars associated with gastroenteritis are noncapsulated. Here we show that optimization of the immune evasive properties conferred by the ...

1988
Steven Minton

Although P revious research has demonstrated that EBL is a viab e approach for acquiring search control knowledge, in practice the control knowledge learned via EBL may not be useful. To be useful, the cumulative benefits of applying the knowled a cumulative costs of testing whet e must outweigh the a licable. er the knowledge is d? Unlike most ODIGY/EBL system eva uates the costs and benefits ...

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