Staphylococcal Protein AImmunosorbentsImmunoglobulin GStaphylococcus aureusAntigen-Antibody ComplexBinding Sites, AntibodyStaphylococcusImmunoglobulin Fc FragmentsSepharoseRheumatoid FactorImmunoglobulin MAntibody SpecificityStaphylococcal InfectionsBacterial ProteinsReceptors, FcImmunoglobulin Variable RegionAmino Acid SequenceImmunoglobulinsRecombinant Fusion ProteinsMolecular Sequence DataPlasmids