CD244/TREML2 protein level ratio in blood (OBA_2055381) can be described as follows. A compound attribute that is the ratio of amount of natural killer cell receptor 2B4 (human) in blood to amount of trem-like transcript 2 protein (human) in blood. Also known as: the ratio of amount of natural killer cell receptor 2B4 (human) in blood to amount of trem-like transcript 2 protein (human) in blood.