PTPRC and neoplasm: IF staining for the neutrophil marker Ly6G+ confirmed these results, revealing a slight, but not significant, increase in the proportion of neutrophils (CD45+ Ly6G+ cells) among tumor cells in MakA-treated mice (Fig. 4E, F), as well as in the percentage of neutrophils within the leukocyte population (Fig. 4E, G).