Ontology of Biological Attributes id OBA_2053349 (CD69/MPIG6B protein level ratio in blood) can be described as follows. A compound attribute that is the ratio of amount of early activation antigen CD69 (human) in blood to amount of megakaryocyte and platelet inhibitory receptor G6b (human) in blood. Also known as: the ratio of amount of early activation antigen CD69 (human) in blood to amount of megakaryocyte and platelet inhibitory receptor G6b (human) in blood.