Figure 2.
IFN-γ enhances activation of p38 and JNK by inhibiting MKP-1 expression. Resident peritoneal macrophages were treated with or without 50 U/ml IFN-γ overnight before LPS stimulation (100 ng/ml) at the indicated times. The levels of MKP-1 protein and phosphorylated MAP kinases were examined using Western blotting. Please note that the order for the + IFN-γ samples is from right to left.