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Oil red O (ORO) staining is significantly less in double knockout (DKO) descending aortas. A, Representative thoracic aortas from apolipoprotein (Apo)e−/−and DKO mice stained with ORO. B, % ORO positive area; each symbol represents 1 plaque (7 DKO; 8 Apoe−/−). Data were analyzed by independent sample t test. **P<0.01.
