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Complete cell cycle of a bacterial cell computer-simulated in 4D

09 May 2026

Soft Cell

For over a hundred years scientists have tried to pin down life as it carries on regardless; to formalise its hidden rules using maths, or using increasingly powerful computers to simulate the volatile, complex, seemingly random events in cells, organs and ecosystems. Past efforts focus on smaller parts of the whole – models of signalling inside cells, or processes like cell division. But here scientists bring some of the pieces together, using computer models to simulate a simplified bacterial cell. Pictured after replicating its DNA, the virtual bacterium separates its 'mother' chromosome (green) from the two new 'daughter' chromosomes, partitioned into different areas of the cell by specific proteins, ready for the cell to divide. Simulating such 'simple' life is a step towards models of more complex mammalian cells, in health and disease.

Written by John Ankers

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BPoD stands for Biomedical Picture of the Day. Managed by the MRC Laboratory of Medical Sciences until Jul 2023, it is now run independently by a dedicated team of scientists and writers. The website aims to engage everyone, young and old, in the wonders of biology, and its influence on medicine. The ever-growing archive of more than 4000 research images documents over a decade of progress. Explore the collection and see what you discover. Images are kindly provided for inclusion on this website through the generosity of scientists across the globe.

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