Current Topics In Microbiology and Immunology / Ergebnisse Der Mikrobiologie Und Immunitatsforschung

Paperback / softback. New. Phenomena as diverse as tuberculin sensitivity, delayed sensitivity to soluble proteins other than tuberculin, contact allergy, homograft rejection, experimental autoallergies, and the response to many microorganisms, have been classified as members of the class of immune reactions known as delayed or cellular hypersensitivity.

Paperback / softback. New. Two kinds of antigenic variation occur in influenza viruses, antigenic drift and major antigenic shifts; Antigenic drift, which involves gradual changes in the surface antigens of influenza virus, is thought to result from the selection by an immune popula tion of mutant virus particles with altered antigenic determinants.

Paperback / softback. New. Each control operation is mediated by a pair of complementary genetic elements (hereafter called "control cell"): a control gene which produces a l control (or regulator) protein and a control site which is the target for the regulator protein. Negative control means that the control protein (repressor) prevents gene expression.

Paperback / softback. New. This article is concerned with the use of viral models for the study of the mechanism of protein biosynthesis and its regulation. The scope is restricted mainly to general aspects of animal viral systems and how these systems may be used to approach the question of cellular regulation.

Paperback / softback. New. The Herpesviruses A consideration of the genetic analysis of members of the herpesvirus group necessitates a description, albeit brief, of the properties of the group and, most importantly, of their genetic material.

Paperback / softback. New. Ever since arbovirus infections became known and their relative importance assessed, experiments were designed to elucidate the mode of transmission and the most important natural hosts responsible for perpetuating the infection in nature.

Paperback / softback. New. 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;

Paperback / softback. New. The study of streptococcal infections and their sequelae has in the last two decades yielded several important findings on the biological properties of cellular and extracellular products of group A streptococci.

Paperback / softback. New. General aspects of nucleic acid uptake by mammalian cells have been the subject of several reviews during the last few years (PAGANO, 1970;

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