To validate the inhibitory role of CD47 expression in neutrophil-mediated killing of tumor cells, we screened a large number of tumor cell lines and evaluated the expression levels of common tumors associated antigen targets, including CD47 (Figure 1C), as well as the expression of EGFR, EpCAM, and HER2 (Figure 1D). The gene discussed is EGFR; the disease is neoplasm.