DAPP1/MPIG6B protein level ratio in blood (OBA_2055070, an Ontology of Biological Attributes identifier) can be described as follows. A compound attribute that is the ratio of amount of dual adapter for phosphotyrosine and 3-phosphotyrosine and 3-phosphoinositide (human) in blood to amount of megakaryocyte and platelet inhibitory receptor G6b (human) in blood. Also known as: the ratio of amount of dual adapter for phosphotyrosine and 3-phosphotyrosine and 3-phosphoinositide (human) in blood to amount of megakaryocyte and platelet inhibitory receptor G6b (human) in blood.