This new edition takes account of the progress that has been made in the field since the publication of the first edition in 1986. Although the basic principles remain the same, significant advances have been made in areas such as serum-free media, scale-up, and flow cytometry. As these techniques have developed as tools for the cell biologist, their availability to the non-specialist has also increased dramatically. Use of the tetrazolium salt MTT as a colorimetric indicator of viability has made a considerable impact on cytotoxicity assay, and DNA fingerprinting has revolutionized the identification of individual cell strains. These, and other developments in the techniques described have made this new edition essential. The emphasis remains on presenting techniques in a readily accessible form, with detailed protocols given throughout. This volume should be of use to researchers involved in both biological research and the commercial exploitation of animal cell culture.