part_of part of part of has_part has part has part site_of endothelial cell angioblastic mesenchymal cell branching morphogenesis of an epithelial tube protein-containing material entity developing anatomical structure vascular cord EFO:0003709 ZFA:0005077 uberon UBERON:0006965 TAO:0005077 The vascular cord is the primordial vasculature that will develop into blood vessels by the process of tubulogenesis[GO]. The vascular cord is composed of angioblast or vascular endothelial cells in a solid linear mass called a cord. The cord then undergoes tubulogenesis to form the lumen of the vessels[ZFA]. primordial vasculature