A galactocerebroside (or galactosylceramide) is a type of cerebroside consisting of a ceramide with a galactose residue at the 1-hydroxyl moiety. SphingolipidGlucose A galactocerebroside (or galactosylceramide) is a type of cerebroside consisting of a ceramide with a galactose residue at the 1-hydroxyl moiety. The galactose is cleaved by galactosylceramidase. Galactocerebroside is a marker for oligodendrocytes in the brain, whether or not they form myelin.