NOS2 and endometritis: According to our knowledge, there has not been any prior research on the variation of the immune (A2M, TLR2, TGF-β, IRAK3, CCl2, and iNOS), metabolic (ADAMTS20, KCNT2, MAP3K4, MAPK14, RXFP1, FKBP5, RXFP1 FCAMR, and EPHA4), and antioxidant (SOD3, CAT, GPX, and NDUFS5) markers and how they relate to postparturient endometritis in buffaloes.