This is the fourth in a series of books on Advances in Prostaglandin Research published by MTP Press. From laboratory and animal studies a large number of practical applications of prostaglandins have been identified. In some areas clinical trials have also been carried out. There is usually a long time interval between identifying practical applications of new drugs and clinical trials. Most of the information on practical applications of prostaglandins is scattered in different journals. Although a number of books dealing with prostaglandin research have been published (including some on practical applications in specific areas, e.g. reproduction) there is no single volume dealing with all areas of practical applications of these substances. This book aims at filling this gap and should be of interest to clinicians as well as to medical and basic scientists in academic institutions and in the pharmaceutical industry. In some areas, exciting potential applications of prostaglandins have been identified from basic research but clinical trials have so far not been carried out. Such areas of practical applications are covered in a separate intro­ ductory chapter. All contributors to the volume are scientists and clinicians actively engaged in prostaglandin research and most are recognized authorities in specific areas. The need for rapid publication in a fast-expanding field is obvious.