A compound attribute that is the ratio of amount of CD40 ligand (human) in blood to amount of disabled homolog 2 (human) in blood. The trait is Ontology of Biological Attributes identifier OBA_2054206 (CD40LG/DAB2 protein level ratio in blood). Also known as: the ratio of amount of CD40 ligand (human) in blood to amount of disabled homolog 2 (human) in blood.