Ontology of Biological Attributes entry OBA_2053184 (EBAG9/TDRKH protein level ratio in blood) can be described as follows. A compound attribute that is the ratio of amount of receptor-binding cancer antigen expressed on SiSo cells (human) in blood to amount of tudor and KH domain-containing protein (human) in blood. Also known as: the ratio of amount of receptor-binding cancer antigen expressed on SiSo cells (human) in blood to amount of tudor and KH domain-containing protein (human) in blood.