A compound attribute that is the ratio of amount of matrix metalloproteinase-9 (human) in blood to amount of urokinase plasminogen activator surface receptor (human) in blood. The trait is MMP9/PLAUR protein level ratio in blood (OBA_2054580). Also known as: the ratio of amount of matrix metalloproteinase-9 (human) in blood to amount of urokinase plasminogen activator surface receptor (human) in blood.