CRADD/MAP4K5 protein level ratio in blood (Ontology of Biological Attributes identifier OBA_2054519) can be described as follows. A compound attribute that is the ratio of amount of death domain-containing protein CRADD (human) in blood to amount of mitogen-activated protein kinase kinase kinase kinase 5 (human) in blood. Also known as: the ratio of amount of death domain-containing protein CRADD (human) in blood to amount of mitogen-activated protein kinase kinase kinase kinase 5 (human) in blood.