1. Department of Neurobiophysics, University of Groningen, Nijenborgh 4, NL-9747 AG Groningen, The Netherlands
2. ANU Electron Microscopy Unit, Research School of Biological Sciences, Australian National University, Canberra, ACT, Australia
3. Ecosystem Dynamics, Research School of Biological Sciences, Australian National University, Canberra, ACT, Australia
4. Visual Sciences, Research School of Biological Sciences, Australian National University, Canberra, ACT, Australia
5. Graduate School of Integrated Science, Yokohama City University, 22-2 Seto, Kanazawa-ku, Yokohama 236-0027, Japan