CD19 and neoplasm: Overall, CD4+, CD8+, CD19+, and CD11b+Ly6G+ subsets had fewer LAIR-1+ cells, while NK cells, NKT cells, CD11b+Ly6Chi cells, and CD11b+F4/80hi macrophages had higher percentages of LAIR-1+ cells, particularly at the tumor site compared with the spleen and blood (Figure 2H).