Ontology of Biological Attributes identifier OBA_2052976 (HYOU1/THBD protein level ratio in blood) can be described as follows. A compound attribute that is the ratio of amount of hypoxia up-regulated protein 1 (human) in blood to amount of thrombomodulin (human) in blood. Also known as: the ratio of amount of hypoxia up-regulated protein 1 (human) in blood to amount of thrombomodulin (human) in blood.