Cytogenetics of Cells in Culture documents the proceedings of a symposium that aimed to not only establish guideposts to the direction of the most recent progress in the rapidly developing field of cybegenetics, but to cross-pollinate, in the best Mendelian tradition, the thinking of widely recognized leaders in this field with the current ideas of their colleagues, within the intimacy of this small meeting. The contributors to this symposium emphasized (1) new techniques to detect patterns of DNA replication, to better understand cellular control mechanisms, and to perform chromosome analyses with automated instrumentation; (2) the effects of cell hybridization and of noxious substances such as radiation, chemical agents, and viruses on chromosomal patterns; and (3) the influence of altered chromosomal complement on the survival of cells to long-term tissue culture or to ionizing radiation treatment. It is hoped that the products of the many stimulating discussions which ensued during the 3-day gatherings will stimulate increased vigor and proliferation of research by the participants. It is further hoped that the publication of this volume will infect the reader with new concepts and ideas which will eventually broaden views of cytogenetics.