Differential effect of E2 and EE exposure on the production of different cytokines from LPS-activated splenic leukocytes from NZB/WF1 mice. Splenic leukocytes were activated by LPS (500 ng/mL) for 24 h. Cell culture supernatants were used for ELISA to evaluate the production of cytokines (A) IFNγ, (B) IL-1β, (C) IL-6, (D) TNFα, (E) IL-2, and (F) IL-10 with Ciraplex® multiplex cytokine assay. Data are expressed as mean ± SEM (n ≥ 4). *P < 0.05; **P < 0.01; ***P < 0.001.