IL18BP/ROR1 protein level ratio in blood (Ontology of Biological Attributes term OBA_2054425) can be described as follows. A compound attribute that is the ratio of amount of interleukin-18-binding protein (human) in blood to amount of inactive tyrosine-protein kinase transmembrane receptor ROR1 (human) in blood. Also known as: the ratio of amount of interleukin-18-binding protein (human) in blood to amount of inactive tyrosine-protein kinase transmembrane receptor ROR1 (human) in blood.