Ontology of Biological Attributes identifier OBA_2052984 (ICAM1/REG1A protein level ratio in blood) can be described as follows. A compound attribute that is the ratio of amount of intercellular adhesion molecule 1 (human) in blood to amount of lithostathine-1-alpha (human) in blood. Also known as: the ratio of amount of intercellular adhesion molecule 1 (human) in blood to amount of lithostathine-1-alpha (human) in blood.