Ontology of Biological Attributes term OBA_2053008 (HBEGF/YES1 protein level ratio in blood) can be described as follows. A compound attribute that is the ratio of amount of proheparin-binding EGF-like growth factor (human) in blood to amount of tyrosine-protein kinase Yes (human) in blood. Also known as: the ratio of amount of proheparin-binding EGF-like growth factor (human) in blood to amount of tyrosine-protein kinase Yes (human) in blood.