CD200 and myeloid sarcoma: No differences in concentration and Ib4 positivity in MS vs. OND. Increased concentration, Ib4 positivity and CD19+/CD200+ in active vs. stable MS.  CCR3+ CCR5+ CD4+/CCR3+, CD4+/CCR5+ CC3+/CCR5+ are increased in MS with MRI activity.