OBA_2055461 (CDKN2D/MANF protein level ratio in blood) can be described as follows. A compound attribute that is the ratio of amount of cyclin-dependent kinase 4 inhibitor D (human) in blood to amount of mesencephalic astrocyte-derived neurotrophic factor (human) in blood. Also known as: the ratio of amount of cyclin-dependent kinase 4 inhibitor D (human) in blood to amount of mesencephalic astrocyte-derived neurotrophic factor (human) in blood.