Figure 4. Volume rendering of a 3D dataset (top) with overlaid 3D surface reconstruction (bottom) of the Apis mellifera brain. The semi-transparent image provides a good three-dimensional impression of the brain's stereo geometry and with the overlaid surface reconstructions shows the relative orientation of brain structures in relation to the bee's head capsule. Furthermore, fine boundaries, e.g. between the different parts of the medulla are shown very distinctly.