In MS, the amount and quality of myelin is abnormal, replaced by “sclerotic” plaques, the hallmark of the disease.
Alveolar cells commonly contain fat-droplets and, less frequently, myelin globules.
Between the neurolemma and the axis cylinder is the medullated sheath, composed of a fatty substance known as myelin.
also myeline, "soft material found in nerve tissues," 1867, from German Myelin (1854), from Greek myelos "marrow; the brain, innermost part," of unknown origin.
myelin my·e·lin (mī'ə-lĭn) or my·e·line (-lĭn, -lēn')
A white fatty material composed chiefly of alternating layers of lipids and lipoproteins that encloses the axons of myelinated nerve fibers.
Droplets of lipid formed during autolysis and postmortem decomposition.