MO3.13 cells express various oligodendrocyte markers, including 2′,3′-cyclic-nucleotide 3′-phosphodiesterase (CNPase), galactosylceramide (GalCer), and myelin basic protein (31, 32), and thus, are frequently used to study molecular mechanisms related to demyelination disorders, including multiple sclerosis (33, 34) and KD (35, 36). The gene discussed is CNP; the disease is demyelinating disease.