Subsequent flow cytometric analyses have subdivided neutrophils according to surface markers—including CD177, OLFM4, CD10, CD33, CD11b/c, CD66b, CD63, CD62L, CD54, and CXCR4 [49,54,56,57,58]—with CD177+ cells proposed to confer protection in IBD [59]. This evidence concerns the gene CD177 and irritable bowel syndrome.