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Science 23 May 2008:
Vol. 320. no. 5879, pp. 1031 - 1033
DOI: 10.1126/science.320.5879.1031
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Confusing Kinships

John Bohannon

Understanding microbial evolution and ecology rests on a solid classification system, but coming up with one is difficult.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)