In article <3b227a21 at 212.18.160.197>, Cátia Calé <katija at netc.pt> wrote: http://www-micro.msb.le.ac.uk/LabWork/bact/bact1.htm -- -- Dr Alan J. Cann PhD, Department of Microbiology & Immunology, University of Leicester, P.O. Box 138, Medical Sciences Building, University Road, Leicester LE1 9HN, UK.