A compound attribute that is the ratio of amount of integrin beta-1 (human) in blood to amount of integrin beta-2 (human) in blood. The trait is Ontology of Biological Attributes identifier OBA_2055479 (ITGB1/ITGB2 protein level ratio in blood). Also known as: the ratio of amount of integrin beta-1 (human) in blood to amount of integrin beta-2 (human) in blood.