Highlights d Tumor-secreted CXCR1 and CXCR2 ligands induce extrusion of NETs d NETs protect tumor cells from CTL and NK cytotoxicity in 3D cultures d Inhibition of NETosis sensitizes tumors to PD-1+CTLA-4 dual checkpoint blockade d NETs impair contact of immune cytotoxic cells with tumor cells in living mice Authors
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