ANPEP/NT5E protein level ratio in blood (OBA_2054281) can be described as follows. A compound attribute that is the ratio of amount of aminopeptidase N (human) in blood to amount of 5'-nucleotidase (human) in blood. Also known as: the ratio of amount of aminopeptidase N (human) in blood to amount of 5'-nucleotidase (human) in blood.