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The radiation biology of human lymphocytes is dominated by two phenomena: (a) high radiosensitivity of lymphocytes which die in interphase (b) PHA-induced relative radioresistance of those cells which, after stimulation, escape the interphase death and eventually die in mitosis.

The unique catalytic properties of enzymes and the numerous techniques for immobilization of enzymes and cells continue to maintain a high degree of practical and scientific interest in this area called Enzyme Engineering.

A recent educational survey of nations, belonging to the Organisation for Economic Co-operation and Development (OECD) showed that school children are more literate with ecological terms (as listed above) than with 'pure' scientific terms, like 'phloem', 'mitosis', 'proton', or 'Jurasic period'.

A glance through the Table of Contents will demonstrate the many categories comprising the fields of Speech Communication and Theatre. For those titles which could readily have been placed into more than one category, we did our best to pick the category which seemed to represent the main thrust of the work.

This is the third book chronicling the scientific activities of the European Society for Photobiology (ESP). This multidisciplinary nature of photobiology is reflected by the material covered in this volume, which contains chapters on such diverse themes as motile photoresponses in bacteria, cancer therapy and photosynthesis.

This new voice is given expression by academics and professionals from Third World nations who received their planning education in the west and who now hold posts in major western planning schools.

The objective of this meeting was to bring together an international group of participants to evaluate and to report on recent research in three broad and overlapping fields within the general theme of the relationships between brain plasticity and learning and memory.

Discussions in 1979 and 1980 held at conferences of the Association for Citizens with Learning Disabilities, the Orton Dyslexia Society meetings and elsewhere led to the proposal for a small international seminar, meeting annually, which would be concerned with research and education in the area of special educational needs.

Work with Tradescantia became feasible after Edgar Anderson straightened out the ecology and Sax took advantage of the small number of chromosomes easily visible under the microscope. One of the most important stages in chromosome research was the development, in radiation biology, of radiolabeling the chromosome with tritiated thymidine.

The microorganisms present on the earth today possess a vast range of metabolic activities and are often able to demonstrate their surprising versatility by gaining both new enzyme activities and new metabolic path ways through mutations.

Catherine Tihanyi Georges Mounin, an important figure in contemporary French intellec tual life, has made significant and original contributions in semiotics, I semantics, poetics, the linguistic theory and practice of translation, and the study of the history of linguistics.

The concepts of "relationship" and of "evolution" are inherently genetic ones, and the genetic bases of morphological traits are seldom known in detail and frequently unknown entirely.

The papers that follow are concerned with the analysis of single genes or small gene families. One involves isolating a gene from a cultivated plant, changing it in a specific way and then inserting it back into the same plant where it produces an altered gene product.

I Several years ago, when the Carter administration announced that it would support congressional action to end the public fund ing of abortions, the President was asked at a press conference whether he thought that such a policy was unfair;

Pathogenesis is defined in Blakiston's Medical Dictional), as "the course of development of disease, including the sequence of processes or events from inception to the characteristic lesion or disease.

Detailed de scriptions of the variety of psychological and pharmacological treatments of the suicidal patient are complemented by extensive discussions of the several settings in which such patients will be encountered, whether these be an in-patient unit, an out-patient clinic, a medical ward, an emergency room, or a private office.

The immunohistochemical detection of these antigens has led to new insights into the functional organization of the nervous system, and reference to such studies is almost a sz'ne qua non for discussions of most central and peripheral synapses.

For a variety of reasons, there has been an explosion of interest in research on aging over the past few years. The time is propitious for meetings of experts in various aspects of the aging process, both to discuss among themselves latest advances in the field and also to inte grate known information for researchers and practitioners.

The resultant interaction should encourage new and extended ideas for the improve ment of strains and for the generation of new regulatory combina tions to enhance microbial chemical production from cheap and abundant (including waste) substrates.

Cell Analysis will cover techniques on cell separation, cell identification and classification, characterization of orga nized cellular components, functional properties of cells, and cell interactions.

There is widespread agreement among large segments of western society that we are living in a period of hard times.

This volume is one outcome of a two-year study conducted by the Behavioral Studies Research Group of The Hastings 1 Center.