Fig. 7From: Amorphous silica nanoparticles accelerated atherosclerotic lesion progression in ApoE−/− mice through endoplasmic reticulum stress-mediated CD36 up-regulation in macrophageSiNPs activated ER stress in atherosclerotic lesion. a Representative images of immunohistochemistry staining of CD68, Bip and CHOP in aortic roots. Scale bar = 50 μm. b Statistical analyses of CD68-, Bip-, CHOP- positive area in aortic roots. n = 4. The positive area was located on the lumen side of plaque, and marked with a red dotted line. *p < 0.05 vs Control. Data are expressed as means ± SDBack to article page