C57BL/6J PerC cells were cultured with αCD3 or αIgM +/− the inducible nitric oxide synthase (iNOS) inhibitor NG-monomethyl_L-arginine (1-MA), the indoleamine 2,3 dioxygenase inhibitor (IDO) 1 methyl-tryptophan (1-MT), the arginase (ARG) inhibitor N-ω-hydroxy-nor L arginine (1-NA), the cyclooxygenase (COX) inhibitor indomethacin (INDO), αIFNγ, αIL-10, and/or αIL-4 (A). The exogenous cytokines IL-4, IL-10, or IL-13 +/− indomethacin were added to C57BL/6J PerC cells cultured with αIgM (B). C57BL/6J and BALB/c PerC cells were cultured with αIgM and exogenous cytokines (C).