. "\"Any process that activates or increases the frequency, rate or extent of the formation of a myelin sheath around nerve axons.\" [GOC:mah]" . . "positive regulation of myelination" . "up regulation of myelination" . "up-regulation of myelination" . "upregulation of myelination" . . . . "activation of myelination" . "stimulation of myelination" .