ATOX1/SPARC protein level ratio in blood (Ontology of Biological Attributes entry OBA_2054114) can be described as follows. A compound attribute that is the ratio of amount of copper transport protein ATOX1 (human) in blood to amount of SPARC protein (human) in blood. Also known as: the ratio of amount of copper transport protein ATOX1 (human) in blood to amount of SPARC protein (human) in blood.