A compound attribute that is the ratio of amount of chymotrypsin-C (human) in blood to amount of kin of IRRE-like protein 2 (human) in blood. The trait is Ontology of Biological Attributes term OBA_2054616 (CTRC/KIRREL2 protein level ratio in blood). Also known as: the ratio of amount of chymotrypsin-C (human) in blood to amount of kin of IRRE-like protein 2 (human) in blood.