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  • 54339513836327219821799136998042PublicAssets/3253By attaching fluorescent proteins to the genetic circuit responsible for <i>B. subtilis</i>'s stress response, researchers can observe the cells' pulses as green flashes. In response to a stressful environment like one lacking food, <i>B. subtilis</i> activates a large set of genes that help it respond to the hardship. Instead of leaving those genes on as previously thought, researchers discovered that the bacteria flip the genes on and off, increasing the frequency of these pulses with increasing stress. See entry <a href="https://images.nigms.nih.gov/pages/DetailPage.aspx?imageid2=3254">3254</a> for the related video.Michael Elowitz, Caltech UniversityMichael Elowitz, Caltech UniversityPhotograph

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    Pulsating response to stress in bacteria

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    By attaching fluorescent proteins to the genetic circuit responsible for B. subtilis's stress response, researchers can observe the cells' pulses as green flashes. In response to a stressful environment like one lacking food, B. subtilis activates a large set of genes that help it respond to the hardship. Instead of leaving those genes on as previously thought, researchers discovered that the bacteria flip the genes on and off, increasing the frequency of these pulses with increasing stress. See entry 3254 for the related video.

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    Michael Elowitz, Caltech University

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    Michael Elowitz, Caltech University

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    Photograph

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    3253

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