ECM of A549 lung epithelial cells stained for FBG and fibrin-specific epitopes. IL-6 + DEX–treated cells were stained with (A) MoAb RDV3 for FPA; (B) MoAb 18C6 for FPB; (C) no primary antibody; or (D) MoAb T2G1 for fibrin β15-21. The bar in (D) represents 10 μm.