Fig. 1From: Differential expression of myosin heavy chain isoforms in cardiac segments of gnathostome vertebrates and its evolutionary implicationsSagittal sections of an adult heart from Scyliorhinus canicula immunolabeled with MF20 (a) and A4.1025 (b). While MF20 (brown) marks atrial (A), conal (C) and ventricular (V) myocardium, A4.1025 (pink) marks only the myocardium of the sinus venosus (SV), atrium (A) and the apex of the ventricle (arrowhead). B, bulbus arteriosus. Asterisks: cardiac valves. Scale bars: 1 mmBack to article page