the Major State Basic Research Development Program of China(973 Program),No.G1999054103;National Hightechnology Research and Development Program of China(863 Program),No.2001AA215211;Capital"248"Key Innovation Program of China,No.H010210360119
AIM: In vivo induced genes are thought to play an important role during infection of host. ,AlkA was identified as an in vivo-induced gene by in vivo expression technology (IVET),but its virulence in Shigella flexneri...