Source:http://linkedlifedata.com/resource/umls/id/C0162448
MSH: Derivatives of phosphatidic acid in which the hydrophobic regions are composed of two fatty acids and a polar alcohol is joined to the C-3 position of glycerol through a phosphodiester bond. They are named according to their polar head groups, such as phosphatidylcholine and phosphatidylethanolamine.,CSP: phospholipid in which the phosphate group of a phosphatidic acid is joined in ester linkage to an alcohol moiety; major components of cell membranes.