EGF/MGLL protein level ratio in blood (OBA_2055604, an Ontology of Biological Attributes id) can be described as follows. A compound attribute that is the ratio of amount of pre-pro-epidermal growth factor (human) in blood to amount of monoglyceride lipase (human) in blood. Also known as: the ratio of amount of pre-pro-epidermal growth factor (human) in blood to amount of monoglyceride lipase (human) in blood.