GZMB/IL15 protein level ratio in blood (Ontology of Biological Attributes term OBA_2053123) can be described as follows. A compound attribute that is the ratio of amount of granzyme B (human) in blood to amount of interleukin-15 (human) in blood. Also known as: the ratio of amount of granzyme B (human) in blood to amount of interleukin-15 (human) in blood.