SEMA4D/TXNDC5 protein level ratio in blood (OBA_2055751) can be described as follows. A compound attribute that is the ratio of amount of semaphorin-4D (human) in blood to amount of thioredoxin domain-containing protein 5 (human) in blood. Also known as: the ratio of amount of semaphorin-4D (human) in blood to amount of thioredoxin domain-containing protein 5 (human) in blood.