To determine if these factors influenced control of NEDD9 expression, we next analyzed NEDD9 protein levels upon infection of mBMDM with ST Salmonella Pathogenicity Island SPI1 (ΔinvA) and SPI2 (ΔssaV) mutants, which have defects in the main type III secretion system (T3SS). Here, SPI1 is linked to infection.