Interactions between isolated nucleosome core particles: A tail-bridging effect? S. Mangenot, E. Raspaud, C. Tribet, L. Belloni and F. Livolant Eur. Phys. J. E, 7 3 (2002) 221-231 Published online: 15 March 2002 DOI: 10.1140/epje/i200101151