| prevalence of plasmid-mediated quinolone resistance determinants in citrobacter freundii isolates from anhui, china. | this study was conducted to detect and analyse the presence of plasmid-mediated quinolone resistance (pmqr) determinants [qnr, aac(6')-ib-cr and qepa] among clinical isolates of citrobacter freundii strains isolated from patients in anhui, china. during 2009-2010, 31 citrobacter freundii strains were collected from various hospital units and patient specimens. pcr was used to detect pmqr genes. the genotypes of the positive strains were compared by analysis of banding patterns generated by pfge ... | 2011 | 21816943 |