ITGAM and neoplasm: CD11b+Gr1+ MDSC cells accounted for 14 ± 4% of cells in the primary tumor tissues of the control group, 20 ± 3% in contralateral skin incision group, 17 ± 3% in ipsilateral skin incision group, 18 ± 3% in 1/4 tumor removal group, and 26 ± 6% in 3/4 tumor removal group.