Ontology of Biological Attributes term OBA_2054612 (CRACR2A/TBC1D5 protein level ratio in blood) can be described as follows. A compound attribute that is the ratio of amount of EF-hand calcium-binding domain-containing protein 4B (human) in blood to amount of TBC1 domain family member 5 (human) in blood. Also known as: the ratio of amount of EF-hand calcium-binding domain-containing protein 4B (human) in blood to amount of TBC1 domain family member 5 (human) in blood.