background and objectives: sub-minimum inhibitory concentration (s-mic) can induce changes in morphology, virulence factors and biochemical properties ofbacterial pathogens. the goal of this study is to determine the sub-mic effect of ciprofloxacin and ampicillin on the haemotytic activity of e. coli. material and methods:two clinical isolates of e. coli with high heamolytic activity was select...

background and objectives: mycobacterium tuberculosis complex is consisted of homogenous organisms. they are slowly growing mycobacteria and their isolation and identification are difficult and time consuming. differentiation of mycobacterium bovis, causative mammalian tuberculosis, from other members of mycobacterium tuberculosis complex is very important in epidemiology and control of disease...