PTPRC and neoplasm: Owing to the loss of the B cell fraction (Figure 4C) and immunoglobulins (Supplementary Figure S4A), we then analyzed the tumor immune infiltrate and found comparable infiltration of MDSCs (CD45+, CD11b+, Ly6G+, Ly6C+), tumor associated macrophages (TAMs: CD45+, CD11b+, Ly6G−, Ly6C−, F4/80+, MHC II+), monocytes (CD45+, CD11b+, Ly6G−, Ly6Chi), and dendritic cell subsets (CD45+, CD11b+, Ly6G−, Ly6C−, F4/80−, MHC II+, CD11c+) within the tumor between μMT mice and WT littermates (Figure 4D).