Affiliations: Laboratory of Molecular Biotechnology, Institute of
Animal Biology and Center of Biotechnology UNIL-EPFL, University of Lausanne,
CH-1015 Lausanne, Switzerland, e-mail: nicolas.mermod@iba.unil.ch | Swiss Institute for Experimental Cancer Research
(ISREC), CH-1066 Epalinges, Switzerland, e-mail: pbucher@isrec-sun3.unil.ch