Ontology of Biological Attributes term OBA_2055193 (NSFL1C/PDCD5 protein level ratio in blood) can be described as follows. A compound attribute that is the ratio of amount of NSFL1 cofactor p47 (human) in blood to amount of programmed cell death protein 5 (human) in blood. Also known as: the ratio of amount of NSFL1 cofactor p47 (human) in blood to amount of programmed cell death protein 5 (human) in blood.