FCGR3B and staphylococcus aureus infection: Gene FCGR1A, FCGR3A, and FCGR3B were enriched in both the staphylococcus aureus infection and osteoclast differentiation pathways, and belong to the Fc gamma receptor (FcγR), a receptor for the Fc portion of IgG (Bournazos and Ravetch, 2017).