A compound attribute that is the ratio of amount of tyrosine-protein kinase receptor UFO (human) in blood to amount of vascular cell adhesion protein 1 (human) in blood. The trait is AXL/VCAM1 protein level ratio in blood (Ontology of Biological Attributes entry OBA_2053541). Also known as: the ratio of amount of tyrosine-protein kinase receptor UFO (human) in blood to amount of vascular cell adhesion protein 1 (human) in blood.