AdvertisementResearchers Find A Web Of Factors Behind Multiple SclerosisJanuary 21, 2019Bret StetkafacebookEmailA scanning electron micrograph shows microglial cells (yellow) ingesting branched oligodendrocyte cells (purple), a process thought to occur in multiple sclerosis. Oligodendrocytes form insulating myelin sheaths around nerve axons in the central nervous system. (Science Source)