A designed DNA molecule lights up when it spots a pathogen.
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References
Weizmann Y., et al. Angew. Chem. Int. Edn, 45. 7384 - 7388 (2006).
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Purdue University
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Ball, P. DNA machine sounds the virus alert. Nature (2006). https://doi.org/10.1038/news061106-19
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DOI: https://doi.org/10.1038/news061106-19