A compound attribute that is the ratio of amount of CD99 antigen-like protein 2 (human) in blood to amount of carboxypeptidase M (human) in blood. The trait is OBA_2053396 (CD99L2/CPM protein level ratio in blood). Also known as: the ratio of amount of CD99 antigen-like protein 2 (human) in blood to amount of carboxypeptidase M (human) in blood.