CD68 and non-small cell lung carcinoma: By the correlation analysis between MDSCs and CD68+CD163+M2-like macrophages of NSCLC patients in the good response or poor response group during radiotherapy, we found that these two kinds of peripheral cells of the good response group had an obvious and positive correlation, but the poor response group did not, demonstrating that ionizing radiation could simultaneously increase their percentages in peripheral blood and MDSCs and CD68+CD163+M2-like macrophages could act as biomarkers for treatment responses in NSCLC patients during radiotherapy (Figures 5(e) and 5(f)).