We Get By with a Little Help from Our (Little) Friends

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Science  27 Feb 2004:
Vol. 303, Issue 5662, pp. 1305-1307
DOI: 10.1126/science.1094662

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Most organisms are associated with a large number of species of beneficial bacteria. In a report of a recent meeting, Ruby, Henderson, and McFall-Ngai reveal the many ways in which the microbial consortia of animals influence the evolution, development, and health of their hosts.