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Resource competition as a mechanism for B cell homeostasis.

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Mclean, A. R. | Rosado, M. M. | Agenes, Fabien | Vasconcellos, R. | Freitas, Antonio A.

Edité par CCSD ; National Academy of Sciences -

International audience. Cellular competition for survival signals offers a cogent and appealing mechanism for the maintenance of cellular homeostasis [Raff, M. C. (1992) Nature (London) 356, 397-400]. We present a theoretical and experimental investigation of the role of competition for resources in the regulation of peripheral B cell numbers. We use formal ecological competition theory, mathematical models of interspecific competition, and competitive repopulation experiments to show that B cells must compete to persist in the periphery and that antigen forms a part of the resources over which B cells compete.

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