angioblastic mesenchymal cell adult endothelial progenitor cell 2011-03-14T12:11:18Z EPC The existence of adult endothelial progenitor cells has been controversial in the past. https://github.com/obophenotype/cell-ontology/issues/348 https://github.com/obophenotype/cell-ontology/issues/1410 An adult angioblastic cell released from the bone marrow, or from the kidney in some teleost species, capable of blood circulation and participation in angiogenesis by differentiating into blood vessel endothelial cells.