MOG and relapsing-remitting multiple sclerosis: In addition, a recent study of single-cell gene expression analysis in CSF of patients with relapsing-remitting MS (RRMS) and anti-myelin oligodendrocyte glycoprotein (MOG) disorder revealed that a CSF-specific microglia cell population may be involved in antigen presentation, with a similar gene expression profile to parenchymal microglia [54].