Department of molecular biology and genetics at Aarhus University wants to purchase a Cryo-Correlative Light Electron Microscopy (Cryo-CLEM) system. The system will be used for localizing fluorescently labeled areas of interest in cryogenically cooled biological samples, in order to enable subsequent targeted cryo-electron microscopy or cryo-electron tomography of those areas. A complete cryo-CLEM system consists of a fluorescence microscope, a cryo-stage, and a software package that enables transfer of image data between the fluorescence microscope and the given electron microscopes that are to be used together with the cryo-CLEM system. We do not have an existing fluorescence microscope that can be retooled to make it usable in a Cryo-CLEM set-up. A key aspect is therefore that the system to be procured must be a complete system that contains a fluorescence microscope in addition to the cryo-stage and software package.