Stroke and traumatic brain injury (TBI) damage white and grey matter. Loss of oligodendrocytes and their myelin. impairs axonal function. Remyelination involves oligodendrogenesis during which new myelinating oligodendrocytes are generated by differentiated oligodendrocyte progenitor cells (OPCs). https://www.roneverhart.com/Doorking-2108-080-eVolve-Smart-Video-Intercom-System/