To stratify the samples with respect to their effective state in the infection process, we sorted them based on the extent of epithelial NF-κB signaling from “no activation” (green), via “patchy activation” (blue) and “full activation” (orange), to “inflammation” (red; tissue distortion evident; Fig. 5 A and Fig. S5 D). The gene discussed is NFKB1; the disease is infection.