A compound attribute that is the ratio of amount of macrophage colony-stimulating factor 1 (human) in blood to amount of semaphorin-3F (human) in blood. The trait is Ontology of Biological Attributes entry OBA_2054470 (CSF1/SEMA3F protein level ratio in blood). Also known as: the ratio of amount of macrophage colony-stimulating factor 1 (human) in blood to amount of semaphorin-3F (human) in blood.