To 
                            determine 3D structures with high lateral resolution 
                            one can record a series of X-ray images with the sample 
                            mounted into a rotating stage. Each image represents 
                            the 2D projection of the structures at viewed at different 
                            rotation angles which can be reconstructed in the 
                            computer to give the full 3D information.  
                          
                           
                          
                          Bio-nanotomography 
                            of Yeast Cells
                           
                            
                          
                          courtesy: 
                            C. Larabell and M. LeGros, LBNL and UC San Francsico
                          A 
                            new X-ray microscope focusing to X-ray tomography 
                            on cells is currently being set-up by the National 
                            Center for X-ray tomography at the ALS.
                            
                             
                          
                          X-ray 
                            tomography of Cu interconnects
                           
                          Rendered 
                            image after tomographic reconstruction of 50 images 
                            over 140 degrees 
                            courtesy: G. Schneider, M.A.Meyer, G.Denbeaux et 
                            al; BESSY, Germany
                            [ Applied Physics Letters, 81(14), 2002 ]