Volume 18 of the Subcellular Biochemistry series, which specializes in various aspects of the biochemistry of the intracellular parasites, was initially proposed by Jose Luis Avila and strongly supported by myself, as Series Editor of Sub cellular Biochemistry. Considerable assistance was received from Professor Frank Wunderlich (University of Dusseldorf) and more particularly from Dr. Michael Miles (London School of Hygiene and Tropical Medicine) during the compilation of the list of possible chapters. Our initial aim was to present a comprehensive survey of this broad field of study....