Studies on phospholipids. 7. The distribution of complex phospholipids in various species and tissues

Abstract

Analysis of the phos-pholipids of rat tissues agreed satisfactorily with published results except for the presence of a complex phospholipid fraction. Complex phospholipids were shown to be present in rat tissues, egg yolk and allantoic membrane, influenza virus, human plasma, cabbage leaf, human brain, yeast and a freshwater crustacean. The complex phospholipids constitute about 40% of all phospholipid mixtures so far examined and a procedure for isolating derivatives of these materials is described.