Scheme 1From: Regulating the immunosuppressive tumor microenvironment to enhance breast cancer immunotherapy using pH-responsive hybrid membrane-coated nanoparticlesSynthesis and intracellular uptake of metformin and FGL1 siRNA-loaded pH-responsive hybrid membrane-coated nanoparticles (MC-PLGA@Met-CO2/siFGL1 NPs)Back to article page