For example, the frequency of Gr1+CD11b+Ly6G+ neutrophils (vs. total CD45+ immune cells) increased from 15.2% in the healthy lungs to 30.8%, 57.1%, and 81.0% in the lungs of mice bearing 67NR, 4T07, and 4T1 tumor, respectively, at day 14 after tumor inoculation (Fig. 6a). This evidence concerns the gene PTPRC and neoplasm.