There was high degree of homology in nucleotide sequence between the PCR expandedATCC 10031 acrAB gene sections and the corresponding ones in Escherichia coli.

• PCR扩增的 ATCC 10031的 acrAB基因片段同大肠埃希菌acrAB基因相应片段,在核苷 序列上具有很高的同源性。