This book is a step-by-step guide to studying growth factors, from the initial search for and characterization of new activities, to sophisticated in vivo analysis and molecular biology approaches such as DNA cloning. It also covers the detection and study of growth inhibitory factors. Growth Factors: A Practical Approach is an invaluable practical guide for both those entering growth factor research for the first time and more experienced researchers. As well as covering a wide variety of techniques, this book includes a valuable appendix covering all known growth factors.