ITGAM and breast neoplasm: It has been previously shown that neutrophils and breast tumor cells interact and cluster together in the bloodstream to enhance metastasis in mouse models.[7] To further prove that McTNs may play a role in or mediate this heterotypic clustering, GFP‐expressing MDA‐MB‐231TD (tumor‐derived)[23] cells and differentiated neutrophils stained with CD11b were co‐cultured in either PBS‐ or Vinorelbine‐containing media and allowed to cluster for 6 h under low‐attach conditions (Figure7A; Figure S10A, Supporting Information).