A compound attribute that is the ratio of amount of complement component C1q receptor (human) in blood to amount of tumor necrosis factor receptor superfamily member 4 (human) in blood. The trait is Ontology of Biological Attributes entry OBA_2053393 (CD93/TNFRSF4 protein level ratio in blood). Also known as: the ratio of amount of complement component C1q receptor (human) in blood to amount of tumor necrosis factor receptor superfamily member 4 (human) in blood.