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pTfars1b and deletion clones constructed in this study. The diagram shows the genes, ORFs, restriction endonuclease map, and whether the clones were resistant to 0.5 mM arsenite in Luria agar (AsIII) or 0.2 mM arsenate in low-phosphate medium (AsV). ND, not determined. The directions and types of vector promoters are indicated by labeled arrows.
