In the presence of EDHB we observed the growth inhibition of all the tested staphylococci. The MIC
values for EDHB ranged from 64 to 1024 µg/mL with a median of 512 µg/mL, lower quartile (LQ)
256 µg/mL and upper quartile (UQ) 1024 µg/mL (Table 2). S. aureus strains 7 and 2 showed the lowest
MIC values: 64 µg/mL and 128 µg/mL, respectively. Five of 23 tested strains demonstrated MICs at
256 µg/mL. The most frequent MIC value among responding staphylococci was 512 µg/mL, and was
demonstrated by 13 strains. The highest MICs (1024 µg/mL) were noted for S. aureus strains 10, 18 and
20. The MIC values against MSSA (methicillin susceptible Staphylococcus aureus) and MRSA strains
ranged from 128 to 1024 µg/mL and from 64 to 1024 µg/mL respectively. The statistical analysis indicated
that differences between MICs obtained for MRSA vs. MSSA strains were not significant (p = 0.531).
Similarly, there were no significant differences between MICs values for MLSB negative vs. kMLSB and
iMLSB strains (p = 0.735).