Importantly, PSFL‐NK13 did not affect the expression of SIRPα protein on macrophage membranes (control vs 4 μm PSFL‐NK13, p = 0.3992; Figure 8C), reinforcing its specificity for CD47/αvβ3 interactions on cancer cell membranes without impacting SIRPα on macrophage membranes. This evidence concerns the gene CD47 and cancer.