RETNLB and colorectal carcinoma: RELMβ positive protein staining was found both in CRC and in healthy colonic mucosa; in detail, positive staining for RELMβ was found, at least focally, in 40/44 (91%) tumors and in 39/44 (89%) portions of healthy colonic mucosa adjacent to the neoplasm and included in the analyzed histologic section.