A compound attribute that is the ratio of amount of vascular endothelial growth factor receptor 2 (human) in blood to amount of E-selectin (human) in blood. The trait is Ontology of Biological Attributes id OBA_2055498 (KDR/SELE protein level ratio in blood). Also known as: the ratio of amount of vascular endothelial growth factor receptor 2 (human) in blood to amount of E-selectin (human) in blood.