Hierarchical structure in microbial cellulose: What happens during the drying process Yue Zhao, Satoshi Koizumi, Daisuke Yamaguchi and Tetsuo Kondo Eur. Phys. J. E, 37 12 (2014) 129 Published online: 29 December 2014 DOI: 10.1140/epje/i2014-14129-7