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![](https://webarchive.library.unt.edu/eot2008/20090507224531im_/http://www.nsf.gov/images/x.gif) Discovery Caves Reveal Evolution of Ancient Microbes
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![Photo of researchers collecting microbial biofilms in the Frasassi cave system, central Italy.](https://webarchive.library.unt.edu/eot2008/20090507224531im_/http://www.nsf.gov/news/mmg/media/images/macalady1_f.jpg) |
Penn State University doctoral student Dan Jones (standing) and postdoctoral researcher Sharmishtha Dattagupta collect microbial biofilms in the Frasassi cave system in central Italy, on May 28, 2008.
Credit: Ieva Perkons |
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![Photo of Jennifer Macalady collecting microbial samples in the Frasassi cave system.](https://webarchive.library.unt.edu/eot2008/20090507224531im_/http://www.nsf.gov/news/mmg/media/images/macalady2_f.jpg) |
Penn State University professor and geomicrobiologist Jennifer Macalady collects microbial samples in the Frasassi cave system on June 5, 2008.
Credit: Jenn Macalady, Pennsylvania State University |
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