1National Committee for Clincal Laboratory Standards. Performance Standards for antimicrobiol Susceptibility testing[M]. M 100-S 9, Pennsylvania; NCCLS, 1999. 36, 75.
2LEBELEEBICIOGLU H, NAS Y, EROGLU C, et al. Detection of extended spectrum beta-lactamases in Escherichia coli and kelebsialla pneumoniae[J]. J Chemother, 1999, 11: 103.
3EERRY CL, WEYMOUTH LA. Detecion and clinal significance of extended spectrum β-lactamases in a tertiary care medical center[J]. J Clin Microbiol, 1997, 35: 2061.
6Knothe H,Shap P,Krcmery V,et al.Transferable resistance to cefetaxime,cefoxitin,cefmandole and cefuroxime in clinical isolates of Klebsiella pneumaoniae and Serratia marcescens[J].Infection,1983,11:315-319.
7Antonia Nostro,Anna R B,Maria A C,et al.Susceptibility of methicillin-resistant staphylococci to oregano essential oil,carvacrol and thymol[J].FEMS Microbiology Letters,2004,230(2):191-195.
8National Committee for Clinical Laboratory Standards.2004.Performance standards for antimivrobial susceptibility testing.Fourteenth informational supplement.Approved standard M 100-S14[S].Wayne,Pa:NCCLS.
9Jacoby G A,Archer G L.New mechanisms of bacterial resistance to antimicrobial agents[J].N Engl J Med,1991,324:601-612.
10Nikaido H.Outer membrane barrier as a mechanism of antimicrobial resistance[J].Antimicrob Agents Chemother.1989,33:1831-1836.
