MPIG6B/PTPN6 protein level ratio in blood (OBA_2054544, an Ontology of Biological Attributes identifier) can be described as follows. A compound attribute that is the ratio of amount of megakaryocyte and platelet inhibitory receptor G6b (human) in blood to amount of tyrosine-protein phosphatase non-receptor type 6 (human) in blood. Also known as: the ratio of amount of megakaryocyte and platelet inhibitory receptor G6b (human) in blood to amount of tyrosine-protein phosphatase non-receptor type 6 (human) in blood.