S100A9 and neoplasm: Reclustering of myeloid cells identified 5 distinct cell types: tumor-associated macrophages (C1QA+ C1QC), monocytes (S100A8+ S100A9+), cCD1 cells (classical dendritic cells [DCs], CLEC9A+ XCR1+), cCD2 cells (CD1C+ CLEC10A+) and LAMP3+ DCs (LAMP3+ CCR7+) (Fig. 4A and B).