Microbiologist Christina Agapakis (left) and artist Sissel Tolass show off the cheese they made with bacteria from human skin. The project was part of Agapakis' graduate thesis at Harvard Medical School. Courtesy of Grow Your Own ... Life After Nature at Science Gallery at Trinity College Dublin hide caption

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Illustration by Benjamin Arthur for NPR

Gut Bacteria Might Guide The Workings Of Our Minds

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He's not just getting a cold. He's building his microbiome. iStockphoto.com hide caption

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Say hello to your microbiome, Rob Stein. Our intrepid correspondent decided to get his gut bacteria analyzed. Now he's wondering if he needs to eat more garlic and onions. Morgan Walker/NPR hide caption

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Getting Your Microbes Analyzed Raises Big Privacy Issues

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Knight (left) and Bucheli take soil samples from beneath one of the decomposing bodies. Katie Hayes Luke for NPR hide caption

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Could Detectives Use Microbes To Solve Murders?

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Billie Iverson, 86, of Cranston, R.I., recently underwent a transplant of intestinal microbes that likely saved her life. Ryan T. Conaty for NPR hide caption

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Microbe Transplants Treat Some Diseases That Drugs Can't Fix

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We may not see them, but we need them. iStockphoto.com hide caption

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From Birth, Our Microbes Become As Personal As A Fingerprint

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The tale of the tape may be told, in part, by the microbes inside you. iStockphoto.com hide caption

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Diverse Gut Microbes, A Trim Waistline And Health Go Together

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It's busy down there: a gut bacterium splits into two, becoming two new cells. Centre For Infections/Science Photo Library/Corbis hide caption

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Staying Healthy May Mean Learning To Love Our Microbiomes

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Streptococcus bacteria, like this strain, can be found in our guts. Janice Haney Carr/CDC Public Health Image Library hide caption

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Gut Bacteria We Pick Up As Kids Stick With Us For Decades

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Bad bug: The bacterium Clostridium difficile kills 14,000 people in the United States each year. Janice Carr/CDC/dapd hide caption

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