Figure 48b

Low-power photomicrograph of an aortic cusp in chronic rheumatic aortic insufficiency. The distal half of the cusp is grossly thickened by fibrous tissue. Elastic tissue stain; x5.

Rapaport, E., MD, Rackley, C.E., MD, Cohn, L.H., MD, Aortic Valve Disease, Hurst's The Heart, 8th edition, p 1467.