MPIG6B/SNAP29 protein level ratio in blood (Ontology of Biological Attributes id OBA_2054546) 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 synaptosomal-associated protein 29 (human) in blood. Also known as: the ratio of amount of megakaryocyte and platelet inhibitory receptor G6b (human) in blood to amount of synaptosomal-associated protein 29 (human) in blood.