On the cover: The average BCR V gene usage distribution among segments of intestinal mucosa is visualized. Each color bar represents a V gene and the x-axis represents the multiple intestinal segments. The thickness of each bar is proportional to the frequency of that gene used in a given segment. Zhang, W., Q. Feng, C. Wang, X. Zeng, Y. Du, L. Lin, J. Wu, L. Fu, K. Yang, X. Xu, H. Xu, Y. Zhao, X. Li, U. H. Schoenauer, A. Stadlmayr, N. K. Saksena, H. Tilg, C. Datz, and X. Liu. 2017. Characterization of the B cell receptor repertoire in the intestinal mucosa and of tumor-infiltrating lymphocytes in colorectal adenoma and carcinoma. J. Immunol. 198: 3719–3728.