A compound attribute that is the ratio of amount of C-C motif chemokine 3 (human) in blood to amount of C-C motif chemokine 4 (human) in blood. The trait is CCL3/CCL4 protein level ratio in blood (OBA_2054707). Also known as: the ratio of amount of C-C motif chemokine 3 (human) in blood to amount of C-C motif chemokine 4 (human) in blood.