Ontology of Biological Attributes term OBA_2053027 (HGF/PDGFB protein level ratio in blood) can be described as follows. A compound attribute that is the ratio of amount of hepatocyte growth factor (human) in blood to amount of platelet-derived growth factor subunit B (human) in blood. Also known as: the ratio of amount of hepatocyte growth factor (human) in blood to amount of platelet-derived growth factor subunit B (human) in blood.