A compound attribute that is the ratio of amount of DNA fragmentation factor subunit alpha (human) in blood to amount of mesencephalic astrocyte-derived neurotrophic factor (human) in blood. The trait is DFFA/MANF protein level ratio in blood (Ontology of Biological Attributes term OBA_2053964). Also known as: the ratio of amount of DNA fragmentation factor subunit alpha (human) in blood to amount of mesencephalic astrocyte-derived neurotrophic factor (human) in blood.