“…ECs are mainly identified by expressing cluster of differentiation (CD) 31 and von Willebrand factor (vWf) in co-cultures, while they express a variety of biomarkers including, Fli-1 (friend leukemia integration-1), CD13, CD29, CD36, CD34, CD39, CD44, CD47, ICAM-1 (intercellular adhesion molecule-1), CD61, CD62, CD80, CD102, CD105, CD106, CXCL16, CD143, CD144, CD146, ADAMTS13 (a disintegrin and metalloproteinase with thrombospondin motifs-13), ADAMTS18, and VE-cadherin (vascular endothelial cadherin). However, it must be taken into account that the ratio of expressed markers can be different in specialized endothelial cell networks ( Goncharov et al, 2020 ). In recent years, different sources of endothelial cells have been used alone or in a co-culture system to form capillary network in vitro .…”