The image shows a slice through a 3D tomographic reconstruction of a mouse adenocarcinoma cell based on x-ray microscopy. Live cells were cryofixed by plunge freezing in liquid ethane and the vitrified material observed unstained using x-ray microscopy at a wavelength that yields high contrast between water and organic material. Images were taken over a range of specimen tilts from -60 to +60 degrees at 1 degree intervals. The image represents a 9.8 nm thick slice of the computed tomogram in the x-y plane, and shows the edge of the cell with filamentous cytoskeletal elements just below the plasma membrane. Cytoplasmic vesicles are also present. The black circular structure at bottom right is a bead used as a fiduciary marker. The images have a resolution of ~36 nm (Rayleigh Criterion) and ~70 nm (Fourier Ring Correlation), the latter corresponding to ~35 nm half-pitch resolution. Additional X-ray images from the study are included in this CIL Group. See also: W G Muller et al. 2012 Towards an atlas of mammalian cell ultrastructure by soft X-ray tomography. J Struct Biol 177:179-192.