Ontology of Biological Attributes id OBA_2053001 (CDH17/PECAM1 protein level ratio in blood) can be described as follows. A compound attribute that is the ratio of amount of cadherin-17 (human) in blood to amount of platelet endothelial cell adhesion molecule (human) in blood. Also known as: the ratio of amount of cadherin-17 (human) in blood to amount of platelet endothelial cell adhesion molecule (human) in blood.