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The sample water is poured into the syringe and the team places a sterivex filter on the end. The filter has extremely small holes to not allow the bacteria and any larger particles or organisms to pass through. The filter is then taken back to the lab and removed from the plastic case to start the DNA extraction process. Lauren Watel: "Sometimes these can get very tough to force water through and we will have to use our knees or a caulking gun for leverage." Toolik Field Station, Alaska.

Credit to Read: 
Photo by Lauren Watel (PolarTREC 2014), Courtesy of ARCUS
Photographer: Lauren Watel
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