Fig. 6.
Width of the zones of inhibition (mm) around gentamicin-HA-coated titanium coupons with a protective PLGA overlayer on TSA plates as a function of time for six different staphylococcal strains56. Growth inhibition zones were measured 24 h after inoculation, after which coupons were transferred to a freshly inoculated agar plate and incubated for another 24 h. This procedure was repeated every 24 h to determine the longevity of the antibiotic release up to 4 days. Data represent averages over three separate experiments with error bars indicating the standard deviation. For each strain, significant differences (p < 0.05) within a time series with respect to the day before is indicated by *.