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Ventral view of the heart of an adult Galeus atlanticus. A, atrium; C, proximal component (= conus arteriosus); DC, distal component of the outflow tract; PC, pericardial cavity; SV, sinus venosus; V, ventricle. The arrowhead points to a coronary artery. The white arrows indicate the pericardium. Scale bar = 0.2 cm.
