part of start stage end stage heart lymphatic system cardiac lymphatic endothelial cluster ceriv 2021-08-13T12:30:04Z zebrafish_anatomy isolated lymph endothelial cells ZFA:0005954 Group of lymphatic cells in the heart that form independently of sprouting lymphangiogenesis. These cells appear as single cells that may expand into isolated lymph vessels as development progresses with no connection to the coronary capillary plexus or the lymphatic network. lymphatic endothelial cluster juvenile:days 45-89 adult