KO/TG2 mice, which express VDR only in the epithelial cells of the distal intestine at levels equivalent to wild type (WT) mice, were more resistant to DSS colitis when compared to VDR KO mice (displaying a milder form of colitis, similar to WT mice, including marked reductions in rectal bleeding and colonic blood score; Figure 2B–E: KO/TG2). The gene discussed is VDR; the disease is colitis.