Intra-cellular traffic: bio-molecular motors on filamentary tracks D. Chowdhury, A. Basu, A. Garai, P. Greulich, K. Nishinari, A. Schadschneider and T. Tripathi Eur. Phys. J. B, 64 3-4 (2008) 593-600 Published online: 22 February 2008 DOI: 10.1140/epjb/e2008-00073-5