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Nat Rev Microbiol. 2012 Dec;10(12):815-27. doi: 10.1038/nrmicro2894. Epub 2012 Nov 13.

Knowing your friends: invertebrate innate immunity fosters beneficial bacterial symbioses.

Author information

1
Department of Molecular and Cell Biology, University of Connecticut, Storrs, Connecticut 06269, USA. spencer.nyholm@uconn.edu

Abstract

The innate immune system is present in all animals and is a crucial first line of defence against pathogens. However, animals also harbour large numbers of beneficial microorganisms that can be housed in the digestive tract, in specialized organs or on tissue surfaces. Although invertebrates lack conventional antibody-based immunity, they are capable of eliminating pathogens and, perhaps more importantly, discriminating them from other microorganisms. This Review examines the interactions between the innate immune systems of several model invertebrates and the symbionts of these organisms, and addresses the central question of how these long-lived and specific associations are established and maintained.

PMID:
23147708
PMCID:
PMC3870473
DOI:
10.1038/nrmicro2894
[Indexed for MEDLINE]
Free PMC Article
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