PSMA2 and infection: We also examined antibody levels for several other S. aureus antigens (Fig. 2) but found that infection-associated increases in IgG responses to Hla; Hla (H35L); LukAB (CC8 or CC30); beta toxin; phenol-soluble modulins (PSM) alpha 2, 3, and 4; nuclease I; staphylokinase; SspB; and staphylococcal enterotoxin (SE) proteins were observed in S. aureus SSTI only rarely.