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Gut up and go
Email: Richard Robinson - rrobinson@nasw.org News from The Scientist 2003, 4(1):20030307-04 doi:10.1186/20030307-04
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Helicobacter pylori, a Gram-negative bacterium resident in the human gut that can cause ulcers, occurs in several forms that differ genetically and geographically. In the 7 March Science, Mark Achtman and colleagues at the Max Planck Institute for Infectious Biology, Berlin, Germany, show that sequence differences among extant H. pylori populations correlate with large-scale human migrations — both ancient and recent — and may help resolve questions about human movements through time (Science 299:1582-1585, March 6, 2003).
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