When a baby is born by cesarean section, she misses out on Mom's microbes in the birth canal. Sarah Small/Getty Images hide caption

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The stomach of Oetzi, who was mummified in ice, was home to bacteria that scientists were able to identify. The same species lives in the gut of many modern humans. EURAC/Marion Lafogler hide caption

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Shots - Health News

Stomach Of Ancient Iceman Held Microbes Like Ours

Scientists analyzed the tummy of a 5,300-year-old ice mummy and found bacteria that many modern humans still carry.

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Artist Rogan Brown's paper sculptures are many times larger than the organisms that inspire them. Magic Circle Variation 5 is approximately 39 inches wide by 39 inches tall in its entirety. Brown has created multiple versions of Magic Circle, the shape of which alludes to a petri dish and a microscope lens. Courtesy of Rogan Brown hide caption

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Researchers used cotton swabs to sample bacteria and other microbes from the skin of donated corpses placed in a field in Huntsville, Texas. Katie Hayes Luke for NPR hide caption

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The purple-stained Rothia dentocariosa bacteria are frequently found in the human mouth and respiratory tract. CDC hide caption

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Feces contain digested food residue and a wide variety of microorganisms, mostly bacteria, that are adapted to life in the intestines. The gases the microbes produce could help doctors and scientists track and understand changes related to health. Scimat Scimat/Photo Researchers/Getty Images hide caption

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The Pseudomonas stutzeri bacterium, commonly found in soil, was the most prevalent subway microbe. Lower Manhattan was its prime hangout. Mason/Cell Systems 2015 hide caption

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