Staphylococcal Protein AImmunosorbentsImmunoglobulin GStaphylococcus aureusAntigen-Antibody ComplexBinding Sites, AntibodyStaphylococcusImmunoglobulin Fc FragmentsSepharoseAmino Acid SequenceAntibody SpecificityRheumatoid FactorImmunoglobulin MMolecular Sequence DataBacterial ProteinsStaphylococcal InfectionsReceptors, FcRecombinant Fusion ProteinsImmunoglobulinsImmunoglobulin Variable RegionBinding SitesPlasmidsEscherichia coliRabbitsAntibodiesImmune SeraElectrophoresis, Polyacrylamide Gel