A compound attribute that is the ratio of amount of galectin-4 (human) in blood to amount of protocadherin-17 (human) in blood. The trait is LGALS4/PCDH17 protein level ratio in blood (Ontology of Biological Attributes identifier OBA_2054920). Also known as: the ratio of amount of galectin-4 (human) in blood to amount of protocadherin-17 (human) in blood.