Comment on

• Mucus enhances gut homeostasis and oral tolerance by delivering immunoregulatory signals.

  Shan M, Gentile M, Yeiser JR, Walland AC, Bornstein VU, Chen K, He B, Cassis L, Bigas A, Cols M, Comerma L, Huang B, Blander JM, Xiong H, Mayer L, Berin C, Augenlicht LH, Velcich A, Cerutti A. Shan M, et al. Science. 2013 Oct 25;342(6157):447-53. doi: 10.1126/science.1237910. Epub 2013 Sep 26. Science. 2013. PMID: 24072822 Free PMC article.