Figure 1.

Dynamics of cell membrane fusion seen in stereo–4D reconstructions of C. elegans embryos labeled with FM 4–64 and imaged by multiphoton microscopy (Mohler et al., 1998). This video illustrates the processes of 3D rendering and “cored” reconstruction, as well as demonstrating the widening of the cell fusion aperture both in cross section and 3D. Embryos measure ∼60 × 30 μm.