ITGA6/THPO protein level ratio in blood (Ontology of Biological Attributes entry OBA_2055537) can be described as follows. A compound attribute that is the ratio of amount of integrin alpha-6 (human) in blood to amount of thrombopoietin (human) in blood. Also known as: the ratio of amount of integrin alpha-6 (human) in blood to amount of thrombopoietin (human) in blood.