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Although the refractoriness of persistent cell populations has classically been attributed to growth-inactive cells generated before drug exposure, evidence is accumulating that actively growing cell fractions can also generate persister cells. However, single-cell characterization of persister cell history remains limited due to the extremely low frequencies of persisters. Here, we visualize the responses of over one million individual cells of wildtype\n                    <jats:italic>Escherichia coli<\/jats:italic>\n                    to lethal doses of antibiotics, sampling cells from different growth phases and culture media into a microfluidic device. We show that when cells sampled from exponentially growing populations were treated with ampicillin or ciprofloxacin, most persisters were growing before antibiotic treatment. Growing persisters exhibited heterogeneous survival dynamics, including continuous growth and fission with L-form-like morphologies, responsive growth arrest, or post-exposure filamentation. Incubating cells under stationary phase conditions increased both the frequency and the probability of survival of non-growing cells to ampicillin. Under ciprofloxacin, however, all persisters identified were growing before the antibiotic treatment, including samples from post-stationary phase culture. These results reveal diverse persister cell dynamics that depend on antibiotic types and pre-exposure history.\n                  <\/jats:p>","DOI":"10.7554\/elife.79517","type":"journal-article","created":{"date-parts":[[2025,4,16]],"date-time":"2025-04-16T04:15:07Z","timestamp":1744776907000},"update-policy":"https:\/\/doi.org\/10.7554\/elife.79517","source":"Crossref","is-referenced-by-count":29,"title":["Observation of persister cell histories reveals diverse modes of survival in antibiotic persistence"],"prefix":"10.7554","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3171-4327","authenticated-orcid":true,"given":"Miki","family":"Umetani","sequence":"first","affiliation":[{"id":[{"id":"https:\/\/ror.org\/057zh3y96","id-type":"ROR","asserted-by":"publisher"}],"name":"Research Center for Complex Systems Biology, The University of Tokyo","place":["Tokyo, 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