Methods in Cell Physiology, Volume I, brings together into one compilation, complete and detailed treatments of a number of widely useful techniques in modern cell biology which have not been published in full form elsewhere in the literature. The presentations in this volume are comprehensive to the extent that they may serve not only as a practical introduction to experimental procedures but they also provide some evaluation of the limitations, potentialities, and current applications of the methods. Only those theoretical considerations needed for proper use of the method are included. The book may have particular usefulness for those working with intact cells, and the first chapters deal with culturing and experimental manipulation of a variety of cell types. There are numerous descriptions of techniques designed for working with single cells and of procedures for studying cellular activities in relation to the cell life cycle. The chapters on autoradiography include detailed treatment of qualitative and quantitative aspects of the method as well as simple procedures for using liquid and dry emulsions.