Department of Molecular Biology and Genetics, Aarhus University, DK-8830 Tjele, Denmark. jiang@cbs.dtu.dk.|Department of Molecular Biology and Genetics, Aarhus University, DK-8830 Tjele, Denmark. jiang@cbs.dtu.dk.|Department of Molecular Biology and Genetics, Aarhus University, DK-8830 Tjele, Denmark. jiang@cbs.dtu.dk.|Department of Molecular Biology and Genetics, Aarhus University, DK-8830 Tjele, Denmark. jiang@cbs.dtu.dk.|Electronic Visualization Lab, Department of Computer Science, University of Illinois at Chicago, 60607 Chicago, USA. g.elisabeta.marai@gmail.com.