Along these lines, a mass-cytometry analysis of 144 breast tumors (compared with 46 matched juxta-tumoral tissue and four mammoplasties from cancer-free individuals) defined 19 clusters of myeloid cells and highlighted a frequent co-expression (although at different levels) of phenotypic markers of both M1 and M2 by TAMs such as CD169, CD86, CD204, CD206 and CD163 (16). Here, MRC1 is linked to breast neoplasm.