Buried Treasure

Like digging for a treasure too fragile to move, investigating cells buried deep inside tissues carries huge challenges and huge rewards. Here researchers peer into a thick section of a mouse’s brain. First, they clear the tissue, washing away some of the opaque fatty molecules. Next, sensitive super-resolution microscopy reveals the cells’ details, refined with computer modelling to pick out individual points of light from fluorescent stains. The result is a precise 3D map of an important membrane protein called ChR2, revealing the contours of these buried neurons. This 3D reconstruction allows researchers to study the distribution of blob-like dendritic spines, where neurons connect with each other, colour-coded at different depths in their natural environment. Similar approaches may highlight other important features in cells where fragile architecture is often lost through excavation.

Written by John Ankers

John Ankers

Writer

A former researcher in systems biology, John is now an online biology tutor and professional coach supporting the wellbeing of scientists and NHS professionals. He's writing, too, of course.

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• Image from work by Hao-Cheng Gao and Fan Xu, and colleagues
• Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, USA
• Image originally published with a Creative Commons Attribution – NonCommercial – NoDerivs (CC BY-NC-ND 4.0)
• Published in Nature Communications, April 2026