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Updated: Jul 21, 2025

Preparation and Cryo-FIB micromachining of Saccharomyces cerevisiae for Cryo-Electron Tomography
Published on: November 20, 2021
Integrated Fluorescence Microscopy (iFLM) for Cryo-FIB-milling and In-situ Cryo-ET
Jae Yang1,2, Veronika Vrbovská3, Tilman Franke3
1Department of Biochemistry, University of Wisconsin, Madison, WI USA.
We developed an integrated fluorescence light microscope (iFLM) for cryo-FIB-SEM, enabling precise 3D correlative workflows. This automated method efficiently prepares cryo-preserved cellular lamellae for cryo-electron tomography (cryo-ET) analysis.
Area of Science:
- Microscopy and Imaging
- Structural Biology
- Biotechnology
Background:
- Correlative cryo-fluorescence light microscopy-focused ion beam (cryo-FLM-FIB) milling is crucial for in situ cryo-electron tomography (cryo-ET).
- Precise targeting in correlative workflows for cryo-ET sample preparation remains a significant challenge.
Conclusions:
- The developed iFLM-integrated cryo-FIB-SEM workflow significantly enhances cryo-ET sample preparation.
- This method facilitates efficient and precise lamellar milling for detailed cellular ultrastructure analysis.
- The workflow is applicable to various cryo-preserved biological specimens, including cells, bacteria, and tissues.
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