Ontology of Biological Attributes term OBA_2054684 (ENO2/PLXNA4 protein level ratio in blood) can be described as follows. A compound attribute that is the ratio of amount of gamma-enolase (human) in blood to amount of plexin-A4 (human) in blood. Also known as: the ratio of amount of gamma-enolase (human) in blood to amount of plexin-A4 (human) in blood.