Fig. 3

A picture and histopathological examination of the aortic valve. a. Intraoperative picture of the aortic valve with vegetation (arrow); b. Haematoxylin Eosin staining of the resected aortic valve showing nodular infiltration of lymphocytes and neutrophils into whole layers with fibrin precipitation and necrosis (× 40); c. Gram staining showing clusters of Gram-positive cocci on the surface (× 100)