PECAM1/SOD2 protein level ratio in blood (Ontology of Biological Attributes entry OBA_2054003) can be described as follows. A compound attribute that is the ratio of amount of platelet endothelial cell adhesion molecule (human) in blood to amount of superoxide dismutase [Mn], mitochondrial (human) in blood. Also known as: the ratio of amount of platelet endothelial cell adhesion molecule (human) in blood to amount of superoxide dismutase [Mn], mitochondrial (human) in blood.