CCR1 and colorectal carcinoma: Most CCR1+ myeloid cells recruited into the primary CRC and metastatic CRC were of the granulocytic-MDSC phenotype (CD11b+, CD33+, HLA-DR−, and CD15+) [74] and TAN phenotype (CD11b+, CD33−, HLA-DR−, CD15+, and CD16+) [75], respectively.