The picture on the following page is being reproduced here, at the request of the partici- pants in the Advanced Research Workshop "e;Amino Acid Availability and Brain Function in Health and Disease"e;.
The purpose of this book is to investigate the suitability and applicability of available methods for analyzing the human and ecological risks involved in the release of genetically-modified microorganisms.
It is apparent that wilt diseases continue to be a major problem in crop production because of the number of crops affected, the number and genetic variability of pathogens involved, and their widespread occurrence throughout tropical and temperate regions under a variety of cropping systems.
This volume is based on a workshop "e;Modulation of Synaptic Transmission and Plasticity in Nervous Systems"e; held in n Ciocco, Castelvecchio, Pascoli, Italy, from September 8th to 13th, 1987.
This volume contains the contributions to the workshop "e;The Semiotics of Cellular Communication in The Immune System"e; which took place at "e;11 Ciocco"e; in the hills north of Lucca, Italy, September ~-12, 1986.
The fact that none of the known DNA polymerases is able to initiate DNA chains but only to elongate from a free 3' -OH group raises the problem of how replication is initiated, both at the replication origin and on Okazaki frag- ments.
Medical Parasitology is primarily intended to be an illustrated textbook which provides a review ofthe most important species ofparasite which occur in man; their areas ofdistribution, morphology and development, the typical disease symptoms resulting from infection, epidemiology and also methods of detection and indications for therapy.
In diesem Buch werden die verschiedenen Viren (Hepatitis-B-Virus, Hepatitis-Non-A-Non-B-Viren, Cytomegalievirus, Epstein-Barr-Virus, Papovaviren, HIV), die Blut, Plasma und Plasmapräparate kontaminieren können, besprochen.
In 1979, a conference on x-ray microscopy was organized by the New York Academy of Sciences, and in 1983, the Second Interna- tional Symposium on X-ray Imaging was organized by the Akademie der Wissenschaften in Gottingen, Federal Republic of Germany.
In recent years, tropical forests have received more attention and have been the subject of greater environmental concern than any other kind of vegetation.
Genetic constraints on adaptive evolution can be understood as those genetic aspects that prevent or reduce the potential for natural selection to result in the most direct ascent of the mean phenotype to an optimum.
Dieser Band in der Reihe "Naturwissenschaften Bibliothek" zeigt an einigen ausgesuchten Beispielen, vorgestellt im Rahmen des Studium Generale an der Universität Marburg, wie sich Irrtümer in der Wissenschaft ereignen können, welche - teilweise fruchtbaren - Auswirkungen sie haben können, und welche Konsequenzen sich aus der Fehlbarkeit der Wissen- schaftler ergeben sollten.
Die durch das menschliche Immundefektvirus HIV verursachte erworbene Immunschwäche AIDS gewinnt aufgrund steigender Erkrankungszahlen zunehmend an praktisch-ärztlicher Bedeutung.
Honeybees are as small as flies or as large as hornets, nesting in nar- row cavities of trees and rocks or in the open on large limbs of trees 30 m above ground.
From the Foreword: "e;Anyone who has glimpsed a sample of soil animals, especially the soil arthropods, through the binocular microscope will never forget the fascination of their abundant shapes and structures .
Recent economic trends, especially the worldwide decline in oil prices, and an altered political climate in the United States have combined to bring about major reductions in research on renewable energy resources.
Crystalline surface layers (S-layers) represent an almost universal feature of archaebacterial cell envelopes and can be found in gram-positive and gram-negative eubacterial species from nearly all phylogenetic branches.
