Humanisation of the murine anti-IsaA antibody -a potential target for an antibody-based therapy against multi-resistant Staphylococcus aureus strains B. Oesterreich* 1 1 Institut für Molekulare Infektionsbiologie, Universität Würzburg, Würzburg, Deutschland Background: The Gram-positive bacterium Staphylococcus aureus is the major cause of nosocomial infections.