The average numbers of CD8‐positive IELs were 7.0 per 100 surface epithelial cells (median 3.6, range 2.3–17.4) in CN with MC‐like features, and 7.9 (median 7.9, range 1.6–17.2) in CN with IBD‐like features. This evidence concerns the gene CD8A and cyclic hematopoiesis.