A compound attribute that is the ratio of amount of caspase-8 (human) in blood to amount of leukocyte elastase inhibitor (human) in blood. The trait is Ontology of Biological Attributes entry OBA_2054794 (CASP8/SERPINB1 protein level ratio in blood). Also known as: the ratio of amount of caspase-8 (human) in blood to amount of leukocyte elastase inhibitor (human) in blood.