CXCL1 and colorectal carcinoma: However, CRC tissues have high levels of chemokines such as CXCL10, CXCL8, CXCL5, and CXCL1, which are more likely to recruit T cells for aggregation than NKCs, which contributes to the general scarcity of NKCs in CRC tumor tissues and this phenomenon shows no correlation with the expression of the human leukocyte antigen MHC class I [97].