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Review
. 2011 Jan;11(1):34-46.
doi: 10.1038/nri2901. Epub 2010 Dec 10.

The Double Life of a B-1 Cell: Self-Reactivity Selects for Protective Effector Functions

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Review

The Double Life of a B-1 Cell: Self-Reactivity Selects for Protective Effector Functions

Nicole Baumgarth. Nat Rev Immunol. .

Abstract

During their development, B and T cells with self-reactive antigen receptors are generally deleted from the repertoire to avoid autoimmune diseases. Paradoxically, innate-like B-1 cells in mice are positively selected for self-reactivity and form a pool of long-lived, self-renewing B cells that produce most of the circulating natural IgM antibodies. This Review provides an overview of the developmental processes that shape the B-1 cell pool in mice, outlines the functions of B-1 cells in both the steady state and during host defence, and discusses possible functional B-1 cell homologues that exist in humans.

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