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The video shows a colony of bacteria undergoing oscillations of synchronized lysis via timelapse fluorescence microscopy. The bacteria are carrying a plasmid-based gene circuit that activates lysis at a high cell population density via a quorum sensing molecule. The quorum sensing molecule acts as a positive feedback element in the circuit since it induces its own production and the production of the lysis gene. The colony grows until the sensing molecule reaches a critical density which causes

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