passages.id: split_5_test_2833_passage
passages.type: progene_text
passages.text: We have investigated the relative contributions of these cytokines in the production of IFN-gamma and TNF by the Gram - positive bacterium Staphylococcus epidermidis , using the specific cytokine inhibitors IL-18 binding protein ( IL-18BP ) , IL-1 receptor antagonist ( IL-1Ra ) , anti - IL-12 antibodies ( anti - IL-12 Ab ) , and TNF binding protein .