In addition, we measured the production of IL2-RA and TNF-R1, whose genetic polymorphisms are known to be strongly associated with MS (35, 36), and of Mip3α/CCL20, a chemokine involved in the recruitment of CCR6+ cells across the BBB and into the CNS to recruit CCR6+ cells. The gene discussed is IL2; the disease is myeloid sarcoma.