Ontology of Biological Attributes id OBA_2054459 (MIF/S100A4 protein level ratio in blood) can be described as follows. A compound attribute that is the ratio of amount of macrophage migration inhibitory factor (human) in blood to amount of protein S100-A4 (human) in blood. Also known as: the ratio of amount of macrophage migration inhibitory factor (human) in blood to amount of protein S100-A4 (human) in blood.