1. NorChip AS, Industriveien 8, 3490 Klokkarstua, Norway, Department of Biology, University of Oslo, Kristine Bonnevies hus, 0316 Oslo, Norway, Department of Energy and Process Engineering, Norwegian University of Science and Technology, Kolbjørn Hejes vei 1B, 7491 Trondheim, Norway, Department of Microsystems, SINTEF Electronics and Cybernetics, Forskningsveien 1, 0314 Oslo, Norway, and Department of Tumor Biology, Norwegian Radium Hospital, Montebello, 0310 Oslo, Norway