Combining expansion microscopy (ExM) with lightsheet imaging can enable fast 3D visualisation of biological structures at high-resolution, but such approaches can be hindered by several limitations. By using potassium acrylate-based hydrogels, the authors perform large-volume ExM with Bessel lightsheet microscopy, achieving high-resolution imaging of cellular structures within the fly brain.
- Xuejiao Tian
- Tzu-Yang Lin
- Bi-Chang Chen
