Fig. 5

Plaque formation in the thoracic aorta of ApoE^−/− mice. a Representative images of thoracic aortas stained with oil red O solution of ApoE^−/− mice exposed to SWCNTs or DWCNTs. b Plaque area in the thoracic aortas. c Representative images of western blot analysis of ICAM-1 in ApoE^−/− mice repeatedly exposed to 40 μg of SWCNTs or DWCNTs. d Relative expression levels of ICAM-1 in the thoracic aorta of ApoE^−/− mice. Data are mean ± SD. (n = 5–7,*p < 0.05 vs. control of ApoE^−/− mice; CTL) ICAM-1: intracellular adhesion molecule 1, SWCNT: single-walled carbon nanotube, DWCNT: double-walled carbon nanotube