A compound attribute that is the ratio of amount of C-type lectin domain family 4 member D (human) in blood to amount of protransforming growth factor alpha (human) in blood. The trait is CLEC4D/TGFA protein level ratio in blood (OBA_2054993, an Ontology of Biological Attributes identifier). Also known as: the ratio of amount of C-type lectin domain family 4 member D (human) in blood to amount of protransforming growth factor alpha (human) in blood.