Lipids of normal brain

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Abstract
The concns. of cerebro-side, free cholesterol, total cholesterol, total phospholipid, lecithin, sphingomyelin and cephalin were detd. in the whole brains of a series of guinea pigs, cats and rabbits and on the white matter and grey matter from brains of the cat, dog, beaver and man. On a wet wt. basis, there was a greater concn. of cerebroside, total cholesterol, total phospholipid, lecithin, sphingomyelin and cephalin in white matter than in gray matter. Referred to total "essential lipid" the concn. of cerebroside and total cholesterol was greater in white matter than in gray, while the concn. of total phospholipid was less. However, the concn. of sphingomyelin was greater in white matter, this being offset by a decrease in the concn. of both lecithin and cephalin.