Tissue slices from IBD patients exhibited IBD‐typical characteristics, including immune cell infiltrates and elevated secretion of known IBD‐related biomarkers, such as IL‐8, calprotectin, IL‐17A, and IFN‐γ, which were preserved in our ex vivo culture [40, 41, 42, 43]. The gene discussed is IL17A; the disease is inflammatory bowel disease.