Background picture: Immunostaining images of porcine aortic valvular interstitial cells (VICs). VICs cytoskeleton, in the form of alpha-smooth muscle actin, is shown in green and cell nuclei are shown in blue. Scale bar = 100um. From El Accaoui R, Gould S, Hajj G, Chu Y, Davis M, Kraft D, Lund D, Brooks II R, Doshi H, Zimmerman K, Kutschke W, Anseth K, Heistad D, Weiss R. Aortic Valve Sclerosis in Mice Deficient in Endothelial Nitric Oxide Synthase. Submitted to Circulation.