The series of review articles presented in this book summarizes the recent state of the art in lipid research in a comprehensive way. The authors provide a general overview of this field and draw the reader’s attention to the most recent investigation. Biochemical, cell biological and biophysical aspects of the four major groups of lipids in eukaryotic cells, namely glycerophospholipids, sterols, sphingolipids and storage lipids, are reported and discussed. The experimental systems addressed are mammalian, plant and yeast cells as the most prominent and currently best studied systems in lipid biochemistry, cell and molecular biology.