To confirm that CD47 antibodies could block the immune evasion attack of cancer cells in macrophages,13 the EC lines (KLE, HEC‐1‐A, and Ishikawa) were incubated with anti‐CD47‐FITC and then co‐cultured with macrophages, and the phagocytosis of macrophages was observed by laser confocal microscopy. Here, CD47 is linked to cancer.