Cryo-STEM tomography provides a means to visualize organelles of intact cells without embedding, sectioning, or other invasive preparations. The 3D resolution obtained is currently in the range of a few nanometers, with a field of view of several micrometers and an accessible thickness in the order of 1 µm.
Kirchweger, P., Mullick, D., Wolf, S. G., Elbaum, M. Visualization of Organelles In Situ by Cryo-STEM Tomography. J. Vis. Exp. (196), e65052, doi:10.3791/65052 (2023).