There are virtually hundreds of life scientists publishing hundreds of papers a year on numerous aspects of the cell cycle. The following are few of the topics covered: cell membrane organization, membrane components, cytoskeleton and associated proteins, cell motility, actin in dividing cells, surface modulating assemblies, microfilaments, microtubules, cleavage furrow, fusion, etc. In all these topics, lifescientists talk about, among others, the forces within the system, the motion within the system and the failure of the system. The concepts of force, motion and failure are, one way or another, all related to the structure of the cell and to the mechanics of the cell activities. When the concepts of mechanics and structure enter the problem then one has to talk about biomechanics; in this case, biomechanics of cytology which we would like to call "Cytbmechanics." However, a review of the journals, books and conference proceedings related to various aspects of cytology reveals that mechanicians have not yet entered the field of cytology at a noticeable level. Some lifescientists have indeed made use of the general principles of mechanics in their works; however, no truly interdisciplinary publication has yet appeared from the collaboration of mechanicians and lifescientists in the field of, for instance, cell division.

Cytomechanics is the application of the classical principles of mechanics in cell biology. It is an applied science concerned with the description and evaluation of mechanical properties of cells and their organelles as well as of the forces exerted by them. Thus, this topic needs a truly interdisciplinary approach, and accordingly this volume gives an up-to-date account of the current research done on cell division, mitosis, cytokinesis, cell locomotion and cell deformation during normal development and the cytoskeletal role in cell shape. Biologists, biomechanicians, biophysicists, biochemists and biomathematicians here discuss the basic concepts of mechanics and thermodynamics, emphasizing their applicability to cell activities.

The NATO Advanced Study Institute on Biomechanics of Active Movement and Division of Cells was held September 19-29, 1993 in Istanbul and the Proceedings are presented in this volume. Sixty-eight scientists from sixteen countries attended. Prof. J. Bereiter-Hahn of Goethe-Universitat, Frankfurt, Germany, Prof. A.K. Harris of the University of North Carolina, Chapel Hill, USA, Prof. R.M. Nerem of Georgia Institute of Technology, Atlanta, USA and Prof. R. Skalak of the University of California, San Diego, USA were the members of the International Organizing Committee. As the Scientific Director of the Institute, I wish to express my sincere appreciation for their assistance without which the Institute could not have taken place. This Institute is the third one of the meetings which are now called "the NATO Istanbul Meetings on Cytomechanics". The first one was the NATO Advanced Research Workshop on Biomechanics of Cell Division which was held October 12-17, 1986 in Istanbul. The Proceedings were published as NATO ASI Series A Life Sciences Vol. 132 by Plenum Press in 1987. The second one was the NATO Advanced Study Institute on Biomechanics of Active Movement and Deformation of Cells which was held September 3-13, 1989 in Istanbul. The Proceedings were published as NATO ASI Series H : Cell Biology Vol. 42 by Springer-Verlag in 1990.