Upon infection, the activated NF-κB is translocated into the nucleus of control EGFP-transfected cells, so that NF-κB immunostaining is positive in the whole cell including the nucleus (Fig. S6, left lower panel); this translocation is prevented in EGFP-IκB-transfected cells, in which NF-κB stays in the cytoplasm like in uninfected cells (Fig. S6, right lower pannel). The gene discussed is NFKB1; the disease is infection.