FLP inhibits MMP2 and MMP9 translocation in vitro . Effects of FLP treatment on MMP2 and MMP9 expression by immunofluorescence under inflammatory conditions. Photomicrographs of A549 cells stained with (A) MMP2 (B) MMP9, respectively counterstained with DAPI after pre-treatment with NRS (Vehicle control) or FLP. Representative pictures at original magnification × 400 were shown. All experiments were repeated 3 times.