sentences:  The conduction velocity, however, is not as strong as naturally myelinated axons and the Nodes of Ranvier are inclined to be wider which results in less coverage in the axon by myelin than what is natural.Oligodendrocyte Precursor Cells, or OPC's, are the main cells responsible for the remyelination of demyelinated axons.There are two physiological changes that must occur to OPC's for remyelination to occur.