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Submission + - Appendix Evolved More Than 30 Times (

sciencehabit writes: The appendix may not be useless after all. The worm-shaped structure found near the junction of the small and large intestines evolved 32 times among mammals, according to a new study. The finding adds weight to the idea that the appendix helps protect our beneficial gut bacteria when a serious infection strikes.
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Appendix Evolved More Than 30 Times

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