FGF2/HBEGF protein level ratio in blood (Ontology of Biological Attributes entry OBA_2055311) can be described as follows. A compound attribute that is the ratio of amount of fibroblast growth factor 2 (human) in blood to amount of proheparin-binding EGF-like growth factor (human) in blood. Also known as: the ratio of amount of fibroblast growth factor 2 (human) in blood to amount of proheparin-binding EGF-like growth factor (human) in blood.