IL6ST/PDGFRA protein level ratio in blood (OBA_2054364, an Ontology of Biological Attributes id) can be described as follows. A compound attribute that is the ratio of amount of interleukin-6 receptor subunit beta (human) in blood to amount of platelet-derived growth factor receptor alpha (human) in blood. Also known as: the ratio of amount of interleukin-6 receptor subunit beta (human) in blood to amount of platelet-derived growth factor receptor alpha (human) in blood.