@article {12407, title = {Fluorescence ratio imaging microscopy shows decreased access of vancomycin to cell wall synthetic sites in vancomycin-resistant Staphylococcus aureus}, journal = {Antimicrob Agents Chemother}, volume = {51}, year = {2007}, pages = {3627-3633}, author = {P. M. Pereira and S. R. Filipe and A. Tomasz and M. G. Pinho} }