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    • Microscopic view of Helicobacter bacteria.
    Rights: Public domain - U.S. Government Published 9 November 2008 Size: 74 KB Referencing Hub media

    Helicobacter have a characteristic helical shape. They can live in the highly acidic conditions of the stomachs of mammals, and the Helicobacter family includes bacteria that can cause stomach ulcers.

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      Bacteria

      Bacteria are single-celled organisms. They are prokaryotes and therefore do not have any cell organelles including a cell nucleus. They are believed to be one of the earliest type of life form ...

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