part_of part of part of cerebellar cortex white matter white matter of metencephalon white matter of the cerebellar cortex UBERON:0024045 NLXANAT:20081249 White matter that lies deep to the granular cell layer of the cerebellar cortex. It contains afferents to the cerebellar cortex and axons that run between the cerebellar cortex and the deep cerebellar nuclei.