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The Great Divide

Gene Mms19 has a key role in cell division

20 January 2021

The Great Divide

Cell division – the splitting of one cell into two – is the most fundamental process of life. Every living thing depends on it, from the tiniest bacteria to the biggest whale, and it’s vitally important that cells divide properly when and where they’re needed. Problems with cell division in animals can result in misshapen or missing body parts, while over-proliferation leads to cancer. These images show stem cells in the brains of developing fruit flies, stained using fluorescent dyes that highlight different structures. Researchers have discovered that alterations in a gene called Mms19 cause changes in cell division, leading to abnormally small brains (centre and right-hand panels) compared with normal flies (left). This is a new role for Mms19, which was previously implicated in repairing damaged DNA, opening up exciting new avenues for studying and potentially treating human health conditions caused by faulty cell division, such as cancer or brain diseases.

Written by Kat Arney

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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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