Ontology of Biological Attributes term OBA_2054262 (AMBP/HYOU1 protein level ratio in blood) can be described as follows. A compound attribute that is the ratio of amount of protein AMBP (human) in blood to amount of hypoxia up-regulated protein 1 (human) in blood. Also known as: the ratio of amount of protein AMBP (human) in blood to amount of hypoxia up-regulated protein 1 (human) in blood.