Ontology of Biological Attributes identifier OBA_2054467 (CSF1/IL6 protein level ratio in blood) can be described as follows. A compound attribute that is the ratio of amount of macrophage colony-stimulating factor 1 (human) in blood to amount of interleukin-6 (human) in blood. Also known as: the ratio of amount of macrophage colony-stimulating factor 1 (human) in blood to amount of interleukin-6 (human) in blood.