Fig. 1From: Impact of Fetuin-A, Lp(a), matrix gla protein and macrophage density on calcific aortic valve disease: a clinical studyResults of valve visual observation by HE staining and CD68 immunohistochemical staining; (A): normal aortic valve (HE, × 40), composed of collagen layers, loose layers, and ventricular layers, collagen layer (mainly composed of collagen), intermediate loose layer (containing a small amount of collagen), and ventricular layer (mainly composed of elastic fibers); (B): Calcific aortic valve (HE, × 40), visible calcification; (C): Calcific aortic valve (IHC, × 100), CD68 positive macrophageBack to article page