OBA_2055277 (CD163/SIGLEC1 protein level ratio in blood) can be described as follows. A compound attribute that is the ratio of amount of scavenger receptor cysteine-rich type 1 protein M130 (human) in blood to amount of sialoadhesin (human) in blood. Also known as: the ratio of amount of scavenger receptor cysteine-rich type 1 protein M130 (human) in blood to amount of sialoadhesin (human) in blood.