Biochemistry is the study of the chemistry of living organisms, of the ways in which food is used to serve all the many needs of the body. Biochemistry is closely connected with nutrition, the study of the types and amounts of various materials required in the diet. Biochemistry is also inextricably int~rtwined with endo crinology, the study of hormones, for most of the hormones exert their actions by altering the behaviour of chemical reactions within the body. The central problem in biochemistry is that of the supply of energy. Energy is needed for a multitude of purposes of which muscular activity is the best known. Energy is required for digestion, and for the functioning of the kidney, the liver, the brain and all the other organs in the body. Energy is also essential for the building up of the complex organic molecules of which the body is con structed. Ultimately, most of the energy utilized on earth comes from the sun. Plants are able to tap this energy source directly by the process of photosynthesis. By using pigments, notably the green chlorophyll, plants can trap the energy of sunlight and use it to build up complex substances such as fat, carbohydrate, protein and nucleic acids. The only raw materials required are carbon dioxide, water and simple inorganic substances such as nitrates which can be extracted from the soil.

Essential Biochemistry, Endocrinology and Nutrition

David F. Horrobin

Health, Fitness & Dieting

Medical & Technical Publishing Co. Ltd.

Immunological Aspects of Transplantation Surgery

R. Y.Calne Surgeons are transplanting kidneys in ever increasing numbers-more than 10000 renal allografts have now been reported to the Transplant Registry. With related donors 75% of grafted kidneys continued to function after 2 years, compared with 50% when the donors were unrelated. The therapeutic value is obvious, but the management is largely empirical and results have improved little in the past 5 years. The basic sciences related to tissue transplantation have advanced rapidly. New serological and tissue culture techniques and chemical analysis of antigens and anti­ bodies have produced complicated data that is almost incomprehensible to the non­ specialist. Mathematical treatment of genetic probabilities and of immunological kinetics are similarly difficult to follow for those not especially trained. There has always been a gulf between the practical clinician whose patients do not behave like inbred rodents and the biologist who likes carefully controlled experiments with easily observed results. Both realize, however, that predictable and safe control of rejection must involve close collaboration and co-operation between the laboratory and the clinic. Unfortwlately, the different nature of the work and the workers has widened the gap between them. The clinicians tend to improve their techniques and patient care, whilst the biologists seek clearer and more precisely deflned experi­ ments which lead them to use increasingly artiflcial experimental models.

Roy Yorke Calne,R. y. Carne

Protein is the origin. foundation and essential component of life and of human activity. It is an emotive subject and any claim. statement or opinion is sensitive to attack from experts and others who have a restricted experience or are subjects of commercial or political pressure. Many of the facts. opinions and forecasts are disputed and may be disproved in due course. As presented. they are true as far as is known but may represent little more than majority impression at the time of writing. Changes in the seventies are rapid. drastic and mainly unantici­ pated. At any time there could be a comprehensively influential discovery or incident which could alter the entire pattern of protein supply and demand. Scientific and academic statements in this book may be criticised by purists but it is to be appreciated that the book is intended for universal appreciation. Statements are written to be understood within the context. If the author offends by slightly bending the rules of scientific presen­ tation. or by making a claim which might not prove absolutely accurate if all factors are analysed. he makes no apology. When everybody in the world has a full belly and a contented mind there will be time to argue about details. At present. we need an extra 20 million tons of protein per year. If this book helps to find it the author will be happy.

World Protein Resources

Allen Jones

Cookbooks, Food & Wine

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Books by Medical & Technical Publishing Co. Ltd.

See the best price to sell, buy or rent books by the Medical & Technical Publishing Co. Ltd. publisher. BookScouter helps to compare book prices from 25+ online bookstores and 30+ buyback vendors with a single search.

Essential Biochemistry, Endocrinology and Nutrition

Immunological Aspects of Transplantation Surgery

World Protein Resources