Supplementary Material for: Protective Role of Complement C5a in an Experimental Model of <i>Staphylococcus aureus</i> Bacteremia von Köckritz-Blickwede M. S.Konrad S.Foster J.E.Gessner E.Medina 2009 The complement system is a key component of the innate immune response. Here, we have examined the role of complement anaphylatoxin C5a in an experimental model of <i>Staphylococcus aureus</i> bacteremia. Our data provide compelling evidence for a protective role of C5a during staphylococcal bloodstream infection.