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21 October 2026
Re-gutting Fish
The stem cells that refresh the gut lining in zebrafish have been elusive. Here, researchers find that cells bearing sox9b protein behave as stem cells responding to injury to replenish the gut epithelium, and they identify where in the fish gut architecture they're located. Although different, greater understanding of epithelium renewal in zebrafish means they can be used appropriately as models of mammalian intestinal biology
Read the published research article here
Written by
- Image from work by Guozhen Wu, Xiangyong Wei and Liqi Zhang, and colleagues
- Institute of Developmental Biology and Regenerative Medicine, Southwest University, Beibei, Chongqing, China
- Image originally published with a Creative Commons Attribution 4.0 International (CC BY 4.0)
- Published in Cell Reports, September 2026
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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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