A compound attribute that is the ratio of amount of mesencephalic astrocyte-derived neurotrophic factor (human) in blood to amount of tyrosine-protein phosphatase non-receptor type 6 (human) in blood. The trait is OBA_2053822 (MANF/PTPN6 protein level ratio in blood). Also known as: the ratio of amount of mesencephalic astrocyte-derived neurotrophic factor (human) in blood to amount of tyrosine-protein phosphatase non-receptor type 6 (human) in blood.