"Fig. 141: Reconstructed 3D image of the 1 cm3 liquid foam (air bubbles in soap solution): a billion of 10-µm voxels (volume image elements). The (false) colours label bubbles. "




Stumbled on it during an google image search, here:

http://www.esrf.fr/UsersAndScience/Publications/Highlights/2004/Imaging/Ima5/