Book excerpt: The major lipid components of biological membranes can undergo many diverse and fascinating morphological rearrangements. Studies of these diverse phases and the manner in which they are formed tends to alter the properties of ordinary bilayer membranes. This book examines the structural and biological roles of lipids forming non-lamellar structures.Key Features* Characterization of non-lamellar structures * Protein activity and membrane properties* Analysis of membrane fusion* Affect of non-lamellar forming lipids on biological systems