A compound attribute that is the ratio of amount of lymphocyte function-associated antigen 3 (human) in blood to amount of signal-regulatory protein beta-1 isoforms 1/2 (human) in blood. The trait is CD58/SIRPB1 protein level ratio in blood (Ontology of Biological Attributes identifier OBA_2054169). Also known as: the ratio of amount of lymphocyte function-associated antigen 3 (human) in blood to amount of signal-regulatory protein beta-1 isoforms 1/2 (human) in blood.