Ontology of Biological Attributes id OBA_2055556 (CGREF1/FAM3C protein level ratio in blood) can be described as follows. A compound attribute that is the ratio of amount of cell growth regulator with EF hand domain protein 1 (human) in blood to amount of protein FAM3C (human) in blood. Also known as: the ratio of amount of cell growth regulator with EF hand domain protein 1 (human) in blood to amount of protein FAM3C (human) in blood.