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  • 51950022700260250105051251203453PublicAssets/2314A nanometer-sized biosensor can detect a single deadly bacterium in tainted ground beef. How? Researchers attached nanoparticles, each packed with thousands of dye molecules, to an antibody that recognizes the microbe <em>E. coli</em> O157:H7. When the nanoball-antibody combo comes into contact with the <em>E. coli</em> bacterium, it glows. Here is the transition, a single bacterial cell glows brightly when it encounters nanoparticle-antibody biosensors, each packed with thousands of dye molecules. Weihong Tan, University of Florida in GainesvilleWeihong Tan, University of Florida in GainesvillePhotograph

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    A nanometer-sized biosensor can detect a single deadly bacterium in tainted ground beef. How? Researchers attached nanoparticles, each packed with thousands of dye molecules, to an antibody that recognizes the microbe E. coli O157:H7. When the nanoball-antibody combo comes into contact with the E. coli bacterium, it glows. Here is the transition, a single bacterial cell glows brightly when it encounters nanoparticle-antibody biosensors, each packed with thousands of dye molecules.

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    Weihong Tan, University of Florida in Gainesville

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    Weihong Tan, University of Florida in Gainesville

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    Photograph

    ID

    2314

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