Ontology of Biological Attributes id OBA_2055487 (ITGB5/S100A4 protein level ratio in blood) can be described as follows. A compound attribute that is the ratio of amount of integrin beta-5 (human) in blood to amount of protein S100-A4 (human) in blood. Also known as: the ratio of amount of integrin beta-5 (human) in blood to amount of protein S100-A4 (human) in blood.