A compound attribute that is the ratio of amount of CD63 antigen (human) in blood to amount of C-type lectin domain family 1 member B (human) in blood. The trait is OBA_2054177 (CD63/CLEC1B protein level ratio in blood). Also known as: the ratio of amount of CD63 antigen (human) in blood to amount of C-type lectin domain family 1 member B (human) in blood.