human_reference_atlas part of cell cell type (from CL) fibroblast cardiac atrium fibroblast 2014-10-07T18:36:54Z CL:2000067 fibroblast http://www.sciencellonline.com/site/productInformation.php?keyword=6320 Any fibroblast that is part of a cardiac atrium. fibroblast CT Homo sapiens heart vasculature right cardiac atrium left cardiac atrium cardiac muscle of right atrium Oblique vein of left atrium Right inferior pulmonary vein Left inferior pulmonary vein Right superior pulmonary vein Left superior pulmonary vein Myocardium of left atrium