Ontology of Biological Attributes identifier OBA_2053651 (AHCY/HSPA1A protein level ratio in blood) can be described as follows. A compound attribute that is the ratio of amount of adenosylhomocysteinase (human) in blood to amount of heat shock 70 kDa protein 1A (human) in blood. Also known as: the ratio of amount of adenosylhomocysteinase (human) in blood to amount of heat shock 70 kDa protein 1A (human) in blood.