1. The Mina and Everard Goodman Faculty of Life Sciences; Bar-Ilan University; Ramat-Gan 5290002 Israel
2. Division of Biological Sciences; University of California, San Diego; La Jolla, CA 92093 USA
3. Weizmann Institute of Science; Electron Microscopy Unit; Rehovot 7610001 Israel
4. The Department of Desalination & Water Treatment, Zuckerberg Institute for Water Research; Ben-Gurion University of the Negev; Sede Boqer Campus Be'er Sheva 84990 Israel