Fig. 4.

Cell-type specific compositions of lipid molecular species. HPLC chromatograms showing the phospholipid composition as monitored by light scattering detection: a–c the separation of sterols and molecular species of PC and SM of MDCK cells (a), McArdle cells (b) and sperm cells (c). d–f The molecular PE species of MDCK cells (d), McArdle cells (e) and sperm cells (f) after preceding isolation of PE by normal phase chromatography. Note that the cell types have a completely different molecular species composition of both PC, SM and PE and that the amount of cholesterol differs as well. Peak numbers refer to the identification of the species in Tables 1 and 2. Arrows indicate cholesterol