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Eggs' Essential Pathway

19 July 2026

Eggs' Essential Pathway

It's known that egg (oocyte) development – in all sexually reproducing animals – relies on a molecular signalling pathway called Wnt/β-catenin, but the details of its role are still being explored. Now, in developing zebrafish, researchers find that Wnt/β-catenin activity rises until eggs reach a certain size, then it rapidly declines. And they reveal the vital function of protein Stn1 in maintaining egg development

Read the published research article here

Image made using Leica Microsystems microscopy

Written by Lindsey Goff

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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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