CXCR3 and myeloid sarcoma: While CXCR3 was expressed in ABC 1 from healthy donors, it was significantly upregulated in ABC 1 cells from people with eMS (Wilcoxon P = 4.58 × 10–9) and MS (Wilcoxon P = 4.6 × 10–14) and in ABC 2 cells from people with eMS (Wilcoxon P = 0.043).