Cardiovascular system

Histology. Staining with hematoxylin and eosin. Infectious (bacterial) endocarditis

Aneurysm of the abdominal aorta

Restored aneurysm of the abdominal aorta

Organization of fibrinous pericarditis

Mitral stenosis

Stenosis of the aorta

Ball thrombus in the left atrium

Patent ductus arteriosus

Transposition of large vessels

Defect of interventricular septum

Atrial septal defect

artrial septal defect plus a cleft in the atrterior cusp of the mitral valve