As we know, CXCR3’s ligands included CXCL10 (IP-10) and CXCL11 (I-TAC), and few researches about CXCL9.CXCL10 was selected through stimulating leukemia U937cell lines from the DNA pool by Luster who comes from American [17]. Here, CXCL9 is linked to leukemia.