A compound attribute that is the ratio of amount of angiotensin-converting enzyme 2 (human) in blood to amount of glutathione hydrolase 1 proenzyme (human) in blood. The trait is Ontology of Biological Attributes entry OBA_2055773 (ACE2/GGT1 protein level ratio in blood). Also known as: the ratio of amount of angiotensin-converting enzyme 2 (human) in blood to amount of glutathione hydrolase 1 proenzyme (human) in blood.