Based on previous research results, our goals are to detect the expression of NRP-1, GTX, and miRs, which are the major molecular signals that affect immune and remyelination in serum exosomes of EAE mice, and to explore the ability of BSYSC to promote remyelination by modulating molecular signals mediated by exosomes in MS to provide a scientific context for invigorating the kidney and producing marrow to treat MS. The gene discussed is NKX6-2; the disease is myeloid sarcoma.