abnormal cardiovascular development abnormal angioblastic cord morphology abnormal angiogenic cell cluster morphology 2013-12-10T13:33:24Z csmith MP:0012500 MPheno.ontology 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