Scientists are pitting bacteria against each other in 3D-printed cages

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http://motherboard.vice.com/blog/scientists-are-pitting-bacteria-against-each-other-in-3d-printed-cages

Our bodies are filled with bacteria, and scientists are very interested in studying their impact on our lives. University of Texas researchers recently traded the traditional petri dish for tiny enclosures 3D printed out of protein. They say the cages better mimic conditions inside the body.

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