DNAJA2/FIS1 protein level ratio in blood (OBA_2053585, an Ontology of Biological Attributes identifier) can be described as follows. A compound attribute that is the ratio of amount of DnaJ homolog subfamily A member 2 (human) in blood to amount of mitochondrial fission 1 protein (human) in blood. Also known as: the ratio of amount of DnaJ homolog subfamily A member 2 (human) in blood to amount of mitochondrial fission 1 protein (human) in blood.