A compound attribute that is the ratio of amount of protein FAM3B (human) in blood to level of 4-galactosyl-N-acetylglucosaminide 3-alpha-L-fucosyltransferase FUT5 in blood. The trait is OBA_2055350 (FAM3B/FUT5 protein level ratio in blood). Also known as: the ratio of amount of protein FAM3B (human) in blood to level of 4-galactosyl-N-acetylglucosaminide 3-alpha-L-fucosyltransferase FUT5 in blood.