In addition, we saw no changes in tumor necrosis factor (TNF-α), IL-8, CXC chemokine ligand 2 (CXCL2), or IL-10 signaling in MRP1 knockdown cells either before or after infection as measured by an enzyme-linked immunosorbent assay (ELISA) (Fig. S7). Here, CXCL2 is linked to infection.