OBA_2052967 (HTRA2/SIAE protein level ratio in blood) can be described as follows. A compound attribute that is the ratio of amount of serine protease HTRA2, mitochondrial (human) in blood to amount of sialate O-acetylesterase (human) in blood. Also known as: the ratio of amount of serine protease HTRA2, mitochondrial (human) in blood to amount of sialate O-acetylesterase (human) in blood.