CD47 and neoplasm: gETL NPs bear CD47, a molecule which prevents phagocytosis through interaction with SIRPα on the surface of macrophages.[39, 40, 41, 42] We speculated that treatment with gETL NPs would occupy SIRPα, thereby disengaging the interaction of SIRPα on macrophages with CD47 on tumor cells and thus promoting macrophage‐mediated tumor cell phagocytosis.