Overexpression of CD155 is associated with PD-1 and PD-L1 expression on immune cells, rather than tumor cells in the breast cancer microenvironment

Figure 1 The relationship between PD-L1 expression in immune cells and CD155 expression in tumor cells. A: Low expression of PD-L1 among patients with negative CD155; B: High expression of PD-L1 among patients with positive CD155.