C22 Galactosylceramide is a sphingolipid that has been found in the central nervous system.{41138,46936} C22 Galactosylceramide levels are increased in the spinal cord, but not the brain or liver, of mice fed a methionine-restricted diet.{41138} C22 Galactosylceramide has been found in postmortem hippocampus from patients with Alzheimer's disease.{46936} [Matreya, LLC. Catalog No. 2138]