Ontology of Biological Attributes identifier OBA_2053653 (AHCY/SNAP23 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 synaptosomal-associated protein 23 (human) in blood. Also known as: the ratio of amount of adenosylhomocysteinase (human) in blood to amount of synaptosomal-associated protein 23 (human) in blood.