Photomicrographs showing serial cross-sections of aortic sinus from apoE/LDLr-DKO mice at 20 weeks of age. Left side, control group (A, C, E, G and I); right side, F-1394-treated group (B, D, F, H and J). A and B, macrophage (BM8); C and D, neutral lipid (oil red O stain); E and F, ACAT (KF-620); G and H, collagen (Sirius red); I and J, SMC (1A4). Scale is 100 μm for all photographs. Magnification,×25.