Given that Ly6Chi inflammatory monocytes primarily depend on CCR2 for tumour infiltration41 and TAMs originate from recruited monocytes as well as tissue-resident macrophages36, we engrafted B16-OVA WT or IFNγRKO tumours into CCR2KO mice to determine whether impeding CCR2-dependent recruitment would impact tumour growth. This evidence concerns the gene CCR2 and neoplasm.