Modulation of the resistance to norfloxacin in by link.

Microdilution assays were performed in order to evaluate the antimicrobial activity of the ethanoic extract from the leaves of (EEBF) against different microorganisms. The extract did not present inner antimicrobial activities against the tested strains. However, EEBF was able to modulate the norfloxacin-resistance against SA1199-B that overproduce the NorA efflux pump, once sub-inhibitory concentrations of EEBF reduced the minimal inhibitory concentratio of the norfloxacin in 87.