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Discovery of the BLyS (also known as BAFF) family of ligands and receptors has yielded a paradigm shift in our view of B-lymphocyte selection, survival, activation, and homeostasis. Previously, the B-cell antigen receptor (BCR) was viewed as the sole mediator of these parameters, in which BCR signals were not only dominant but were also linearly related to consequent outcomes. However, appreciating that BLyS signaling is an equal partner in establishing and maintaining B-cell pools in- cated that additional regulatory complexity - apparently based on population density and homeostatic demands...

Discovery of the BLyS (also known as BAFF) family of ligands and receptors has yielded a paradigm shift in our view of B-lymphocyte selection, survival, activation, and homeostasis. Previously, the B-cell antigen receptor (BCR) was viewed as the sole mediator of these parameters, in which BCR signals were not only dominant but were also linearly related to consequent outcomes. However, appreciating that BLyS signaling is an equal partner in establishing and maintaining B-cell pools in- cated that additional regulatory complexity apparently based on population density and homeostatic demands...

The present volume of "Current Topics in Microbiology and Immunology" is a series of papers on subjects that are relevant to the growing use of 'wild mice' in immunological, microbiological and genetical research. 'Wild mice' is a jargonistic term that is used chiefly in the laboratory to refer to the naturally living forms of house mice (Mus musculus) and also other species closely related to M. musculus. This group of species is designated by systematists as the genus Mus. Immunologists began 20 years ago to study the polymorphisms of 1mmunoglobulins and major histocompatibility complex...