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  • ** FILE ** In this 2008 file photograph provided by the Centers for Disease Control and Prevention (CDC), under a magnification of 5000X, this colorized scanning photomicrograph shows numbers of clustered Gram-negative Salmonella Typhimurium bacteria, the type linked to the salmonella outbreak that resulted in the recall of more than 1,500 foods.

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  • 10,000 germ species live in and on healthy people

    They live on your skin, up your nose, in your gut _ enough bacteria, fungi and other microbes that collected together could weigh, amazingly, a few pounds.

  • 10,000 germ species live in and on healthy people

    They live on your skin, up your nose, in your gut _ enough bacteria, fungi and other microbes that collected together could weigh, amazingly, a few pounds.

  • At left, an undated handout image provided by the National Institute of Allergy and Infectious Diseases (NIAID) shows a clump of Staphylococcus epidermidis bacteria (green) in the extracellular matrix, which connects cells and tissue, taken with a scanning electron microscope. At right, an undated handout image provided by the Agriculture Department shows the bacterium Enterococcus faecalis, which lives in the human gut. (Associated Press/NIAID/Agriculture Department)

    10,000 germ species live in and on healthy people

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Quotations
  • "It's like a forensics lab. If somebody says a shot was fired, without the bullet you don't know where it came from," explained E. coli expert Dr. Phillip Tarr of Washington University School of Medicine in St. Louis.

    Tests find food poisoning faster →

  • "It's like a forensics lab. If somebody says a shot was fired, without the bullet you don't know where it came from," explained E. coli expert Dr. Phillip Tarr of Washington University School of Medicine in St. Louis.

    New tests could hamper food outbreak detection →

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