CXCL12 and mantle cell lymphoma: CCR7-mediated migratory abilities can be selectively potentiated in leukemia/lymphoma cells (as opposed to their normal counterparts) by pre-exposure or co-incubation with other homeostatic chemokines like CXCL12 or CXCL13, as demonstrated in MCL, BL, or SS (78, 90, 183).