OBA_2055760 (SERPINE1/SMAD1 protein level ratio in blood) can be described as follows. A compound attribute that is the ratio of amount of plasminogen activator inhibitor 1 (human) in blood to amount of mothers against decapentaplegic homolog 1 (human) in blood. Also known as: the ratio of amount of plasminogen activator inhibitor 1 (human) in blood to amount of mothers against decapentaplegic homolog 1 (human) in blood.