Medical equipment and techniques

References .

In fish, the sense of taste is extraordinarily highly developed and essentially more sensitive than that of mammals.

This book summarizes the papers presented at the symposium "e;Dynamics and Regulation of the Arterial System"e; held at Erlangen on 28-30 October 1977 in honor of Professor Erik Wetterer.

Hemolysis during filtration through micropores studied by Chien et al.

In many parts of vertebrate and invertebrate central nervous systems, groups of nerve or receptor cells can be found that are arranged and connected according to a precise, functionally defined pattern (Braitenberg, 1973; Santini, 1975; Strausfeld, 1976; Chan-Palay, 1977).

The 9th International Conference on Plant Growth Substances was held at the University of Lausanne, August 30-September 4, 1976.

Expression of an immune response is the net result of complex synergis- tic and antagonistic activities performed by a variety of cell types.

As editor of the two-part Volume V on photosynthesis in RUHLAND'S Encyclopedia, the forerunner of this series published in 1960, I have been approached by the editors of the present volume to provide a short preface.

A considerable amount of information on the retinal morphology in fishes has been accumulating during the past century.

Scientific investigation of the retina began with extensive studies of its anatomical structure.

The problems associated with the movement of water and solutes throughout the plant body have intrigued students of plants since Malpighi's conclusions in 1675 and 1679 that nutrient sap flows upward and downward in stems through vessels in both wood and bark.

One of the points clearly stressed in the beginning of this book is that the essential feature of any dynamic system is change and that, where there is change, there may also be growth and evolution.

Plant pathology embraces all aspects of biological and scientific activity which are concerned with understanding the complex phenomena of diseases in plants.

Animals are important components of any ecosystem and it is impossible to describe structure and funCtioning of the Fennoscandian tundra ecosystems without including this part of the system.

The public's serious concern about the uncertainties and dangers of the conse- quences of human activities on environmental quality demands policies to control the situation and to prevent its deterioration.

A book previously published within the framework of the Ecological Studies Series, entitled "e;Physical Aspects of Soil Water and Salts in Ecosystems"e; included awidespectrum of research papers devoted to new findings in the field of soil-plant-water relationships.

At the end of the last century and the beginning of this century, the prob- lems of immunity in lower vertebrates and the influence of environmental temperature attracted attention for the first time (ERNST, 1890; WIDAL and SICARD, 1897; METCHNIKOFF, 1901).

The papers collected in this book were given and discussed at the symposium on "e;Soil water physics and technology"e;, which was held in Rehovot, Israel, from August 19th-September 4th, 1971.

The past decade has seen a remarkable increase in the use of electron microscopy as a researm tool in biology and medicine.

It is now generally accepted for a variety of reasons - morphological as well as physiologica- that the visual systems of arthropods provide a suitable model for the study of information proces- sing in neuronal networks.

This volume contains the proceedings of a Symposium held at the University of Kiel, Germany, from 31 March to 6 April, 1971.

Influenza continues to be one of the major epidemic diseases of man and is, in fact, his only remaining pandemic disease (BEVERIDGE, 1969).

In spite of ingenious experiments, imaginative theories, and unshakable faith in supreme forces, there is no way to know how life began.

Sea urchin eggs are objects of wonder for the student who sees them for the first time under the microscope.

Prominent progress in molecular biology was only made when it became possible to separate functionally distinct molecules by taking advantage of their biophysical properties.