Ontology of Biological Attributes entry OBA_2053640 (AGRN/CRIM1 protein level ratio in blood) can be described as follows. A compound attribute that is the ratio of amount of agrin (human) in blood to amount of cysteine-rich motor neuron 1 protein (human) in blood. Also known as: the ratio of amount of agrin (human) in blood to amount of cysteine-rich motor neuron 1 protein (human) in blood.