TJP1 and cystic fibrosis: In addition, the increased Ki‐67‐positive cells (Figure S6E, Supporting Information), decreased goblet cells (Figure S6F, Supporting Information), widened paracellular gap (Figure S6G, Supporting Information), and reduced tight junction protein expressions (ZO‐1, Occludin, and Claudin‐3) were observed in FMT‐CM mice, compared with FMT‐CF mice (Figure S6H, Supporting Information).