human_reference_atlas part of has characterizing marker set has marker component HCN4 GJC1 cell cell type (from CL) specialized cardiac myocyte cardiac pacemaker cell of sinoatrial node CT A nodal myocyte that is part of the sinoatrial node. pacemaker cell of sinoatrial node FMA:83383 pacemaker cardiomyocyte cardiac pacemaker cell of sinuatrial node pacemaker cell CL:1000477 pacemaker cell pacemaker cell of sinuatrial node pacemaker cardiomyocyte Homo sapiens sequence collection heart right cardiac atrium left cardiac atrium interventricular septum sinoatrial node atrioventricular node bundle of His cardiac muscle of right atrium atrioventricular region Myocardium of left atrium