Current Topics in Microbiology and Immunology / Ergebnisse der Mikrobiologie und Immunit?tsforschung, W. Arber; R. Haas; W. Henle; P. H. Hofschneider; N
Описание: Expression of an immune response is the net result of complex synergis- tic and antagonistic activities performed by a variety of cell types. Genotypically, T and B cells may represent either separate, independent cell lines, or different stages of development within the same cell lineage.
Описание: 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.
Описание: This teachers guide is structured around 10 fundamental questions about biological evolution. The teachers guide explores the DVD`s commentary from some of the world`s most well-known biologists, who gathered on the Galapagos Islands during a World Summit on Evolution and were interviewed about everything from what evolution is to how it happens to why anyone should care.
Описание: 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.
Описание: 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;
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