bp deletion immediately downstream of IS I in regulatory region of flhD through flhD , flhC , and motA and into motB Colony isolated from feces 20 days postfeeding of MG 1655 Strr

Mouse Intestine Selects Nonmotile flhDC Mutants of Escherichia coli MG1655 with Increased Colonizing Ability and Better Utilization of Carbon Sources Mary P. Leatham, Sarah J. Stevenson, Eric J. Gauger, Karen A. Krogfelt, Jeremy J. Lins, Traci L. Haddock, Steven M. Autieri, Tyrrell Conway, and Paul S. Cohen* Department of Cell and Molecular Biology, University of Rhode Island, Kingston, Rhode Island 02881; Department of Gastrointestinal Infections, Statens Seruminstitut, 2300 Copenhagen S, Denmark; and Department of Botany and Microbiology, University of Oklahoma, Norman, Oklahoma 73019

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