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. 2007 May 4;73(13):4226–4233. doi: 10.1128/AEM.00455-07

FIG. 3.

FIG. 3.

The region that includes the genes necessary for excision of CTnBST. The numbers above the arrows indicate the base pair positions within CTnBST sequence. The “+” and “−” symbols correspond to whether or not complementation of the excisionless phenotype was achieved with the given construct. The results of this experiment lead us to conclude that the promoter for xisBST lies within and/or upstream of BST002.