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The Fourth Course of the International School of Pure and Applied Biostructure, a NATO Advanced Study Institute, was held September 18-31, 1983 at the Ettore Majorana Center for Scientific Culture in Erice, Sicily. The subject of the Fourth Course, which was co-sponsored by national and international agencies, was "Structure and Function of the Genetic "Appara tus. " Participants from 15 countries around the world attended the course. The study of the genetic apparatus is one of humanity's most challeng ing problems, and it has been approached in the tradition of the School from many different points of view, among them biochemistry, genetic eng ineering, cell biology, oncology, biophysics and other fields. It has been most difficult to confine such diverse points of view, as well as their pro ponents, within the four walls of one room, in front of one audience - es pecially since the heterogeneity of background and the inherent difficul ties encountered in communication could overshadow the true spirit of sci entific exchange. We are once again pleased to say the outcome of the 1983 Course has matched the success of the previous course held in Erice on the same subject five years ago. This book is the result of the 1983 Advanced Study Institute, and aims to present a cohesive, interdisciplinary view of the current knowledge on the structure and fuction of the genetic apparatus.
Knowledge in the field of the biology of the extracellular matrix, and in particular of collagen, has made considerable progress over the last ten years, especially in mammals, birds and ln man with respect to very important applied medical aspects. Basic knowledge in the animal kingdom overall has increased more slowly and haphazardly. We, therefore, considered it useful to organize a meeting specifically devoted to the study of the invertebrate and lower vertebrate collagens. The NATO Scientific Division financed an Advanced Research Workshop aimed at bringing together experts qualified in collagen biology (with morphological, biochemical and genetic specialization) with researchers who are currently studying collagenous tissues of invertebrates and lower vertebrates. The Medical-Biology Committee of the CNR-Rome and the University of Milan also supplied interest and support for the organization of this Meeting. The format of the workshop consisted in: 1) main lectures on the most recent aspects of collagen biology; 2) minireviews on the current knowledge of collagenous tissues in the various invertebrate phyla and in fish; 3) contributed papers on particular aspects of research in specific fields; 4) workshops on the methodology of studying collagen. As we had intended, the Workshop gave a comprehensive overview of acquired knowledge and of the present state of research actlvlty. It permitted wide interdisciplinary discussion, enabling collabora tions to be established and new research themes to be chosen. This volume contains the text of all the contributions presented at the Meeting, including posters.
The identification and quantitation of environmental risk in humans is one of the main problems to be solved in order to improve the protection of individuals and of human populations against phys ical and chemical pollutants. Epidemiology plays a central role in the evaluation of health risk directly in human populations. In this volume are collected 33 lectures presented at the AS! course on "Epidemiology and quanti tat ion of environmental risk in humans from radiation and other agents: potential and limitations", sponsored by NATO and Italian Association of Radiobiology and or ganized by ENEA. The course has been devoted to a number of aspects of environ mental risk analysis and evaluation based on epidemiological in vestigation. Basic epidemiological concepts and methods have been reviewed. Fundamentals of dosimetry and microdosimetry were presented in re lation to the contribution of epidemiology in defining the dose effect relationships for radiation carcinogenesis and its relation with age, sex and ethnicity. The mechanisms of carcinogenesis as a multi-stage process were illustrated. One of the main topics was 'cancer epidemiology' and its cor relation with: - occupational and non-occupational exposure to ra diation - diagnostic and therapeutic irradiation - cancer proneness - hereditary and familiar diseases - abnormal response to carcino gens - environmental pollution in air and water - exposure to radon in mines and in building material - atomic bomb explosion - chemo therapy - dioxin and related compounds.
It is ten years since the first symposium on cell locomotion was held (Locomotion of Tissue Cells, Ciba Foundation Symposium 14, 1972). That meeting was chaired by Michael Abercrombie, and in his intro ductory remarks he commented on the extent to which the importance of cell locomotion, apart from that seen in leucocytes, had been under estimated. Much has been done to correct that neglect during the suc ceeding decade, and we have learned more about the underlying mechanisms of cell locomotion and about the factors which may influence it. Abercrombie was himself a major contributor to this field of research (as a glance at the lists of references in this book will confirm), and his ideas inspired the work of many other investigators. As in all branches of science, progress in the study of celliocomo tion has depended on the availability of appropriate experimental techniques. Of these, tissue culture has made the greatest contribution, in conjunction with a variety of procedures using either the light or the electron microscope. We have, therefore, attempted, in chapters 2 and 3, to provide explanations of the techniques which have been parti cularly fruitful, but only in sufficient detail to permit the reader to is not a laboratory manual.