[1] Hebrew Univ Jerusalem, Div Appl Phys, Jerusalem, Israel
[2] Ben Gurion Univ Negev, Inst Appl Biosci, Dept Biotechnol Engn, IL-84105 Beer Sheva, Israel
[3] MIT, Whitehead Inst Biomed Res, Dept Biol, Cambridge, MA 02142 USA
[4] Univ Calif San Francisco, Dept Cellular & Mol Pharmacol, San Francisco, CA 94143 USA
[5] Bar Ilan Univ, Dept Chem, Ramat Gan, Israel