Proceedings of the 12th European congress on electron microscopy : held in Brno, Czech Republic, from 9th to 14th July 2000. Volume I, Biological sciences - Frank, Luděk; Čiampor, Fedor, 1942-; Čech, Svatopluk; Janisch, Roman, 1937- (Czechoslovak Society for Electron Microscopy, 2000)