A compound attribute that is the ratio of amount of adenine phosphoribosyltransferase (human) in blood to amount of macrophage migration inhibitory factor (human) in blood. The trait is APRT/MIF protein level ratio in blood (OBA_2053925). Also known as: the ratio of amount of adenine phosphoribosyltransferase (human) in blood to amount of macrophage migration inhibitory factor (human) in blood.