Human Plasma Sphingomyelins.

Abstract

Summary The sphingomyelin region of human plasma lipids, entirely free from lecithin, has been fractionated into two components by thin-layer chromatography. Both components had properties characteristic of sphingomyelins, but markedly different fatty acid patterns, acids above C₂₀ being concentrated in the less-polar material. On hydrolysis each component appeared to yield several different long-chain bases, but no striking difference was observed in the distribution of these bases between the two components.