abnormal cardiovascular development abnormal angioblastic cord morphology 2013-12-10T13:33:24Z MP:0012500 MPheno.ontology abnormal angiogenic cell cluster morphology any structural anomaly of the cordlike masses of splanchnic mesenchymal cells ventral to the primordial pericardial coelom that arrange themselves side by side to form the primordia of the endocardial heart tubes csmith