Two strains of Enterococcus spp., one resistant (above: a, b, c) and one susceptible (below: d, e, f), exposed to vancomycin, 0 μg/ml (left: a, d), 4 μg/ml (medium: b, e) and 32 μg/ml (right: c, f) and processed by the procedure to assess cell wall integrity. Whereas the resistant strain does not show lysis after vancomycin doses, the sensitive strain is clearly affected. There is no evidence of background of extracellular DNA fragments.
Santiso et al. BMC Microbiology 2011 11:191 doi:10.1186/1471-2180-11-191