Fig. 6From: Regulating the immunosuppressive tumor microenvironment to enhance breast cancer immunotherapy using pH-responsive hybrid membrane-coated nanoparticlesBiosafety estimation of different formulations and immunohistochemistry analysis. a Representative histological images of major organs from mice under different treatments. Scale bar, 100 µm. b Immunohistochemistry to detect PD-L1, AMPK-α, Thr172, and FGL1 in tumors. The images were acquired with a Leica microscope at low magnification (Scale bar, 100 µm)Back to article page