A compound attribute that is the ratio of amount of receptor-binding cancer antigen expressed on SiSo cells (human) in blood to amount of tubulin-folding cofactor B (human) in blood. The trait is OBA_2053182 (EBAG9/TBCB protein level ratio in blood). Also known as: the ratio of amount of receptor-binding cancer antigen expressed on SiSo cells (human) in blood to amount of tubulin-folding cofactor B (human) in blood.