RT Journal A1 SCHMIDT G, OTTENSTEIN BB, SPENCER WA, et al T1 THe partition of tissue phospholipides by phosphorus analysis JF A.M.A. Journal of Diseases of Children JO A.M.A. Journal of Diseases of Children YR 1959 FD May 1 VO 97 IS 5_PART_II SP 691 OP 708 DO 10.1001/archpedi.1959.02070010693007 UL http://dx.doi.org/10.1001/archpedi.1959.02070010693007 AB The known tissue phospholipides may be divided into four different groups on the basis of the nature of certain bonds between the lipide groups and between the phosphorus-containing groups of their molecules: 1. Ester phospholipides such as lecithin (phosphatidyl choline), certain cephalins such as inositol cephalin, phosphatidyl ethanolamine, and phosphatidyl serin. Their lipide groups are exclusively fatty acids which are linked to the phosphorus-containing moiety of each molecule by alkali-labile ester bonds. 2. Plasmalogens. Each molecule of this group contains as lipide groups an aldehydogenic group and a fatty acid group. The former appears to be attached to the phosphorus-containing moiety in the form of a vinyl ether (dehydrated hemi-acetal)* by a linkage which is very labile towards acids and mercury2 ions, the latter by an alkali-labile ester linkage.1,13,14 3. Etherphospholipides3 which contain as lipide groups long-chain alcohol groups which are attached to the phosphorus-containing part