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Nature. 1996 Jun 27;381(6585):751-8.

Clonal selection and learning in the antibody system.

Author information

  • Institute of Genetics, University of Cologne, Weyertal, Germany.

Abstract

Each antibody-producing B cell makes antibodies of unique specificity, reflecting a series of ordered gene rearrangements which must be successfully performed if the cell is to survive. A second selection process occurs during immune responses in which a new antibody repertoire is generated through somatic hypermutation. Here only mutants binding antigen with high affinity survive to become memory cells. Cells expressing autoreactive receptors are counter-selected at both stages. This stringent positive and negative selection allows the generation and diversification of cells while rigorously controlling their specificity.

PMID:
8657279
[PubMed - indexed for MEDLINE]
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