Making invisible visible - Electron tomography shows a lattice surface layer in whole-mounts of Lactobacillus brevis

Department of Pathology, Haartman Institute, P.O. Box 21, FI-00014 University of Helsinki, Finland Nanomicroscopy Center, Department of Applied Physics, P.O. Box 3500, FI-02150 Aalto University School of Science and Technology, Espoo, Finland Department of Biomedical Engineering & Computational Science, P.O. Box 9203, FI-02015 Aalto University School of Science and Technology, Finland Department of Physics, P.O.Box 64, FI-00014 University of Helsinki, Finland Department of Basic Veterinary Sciences, P.O. Box 6, FI-00014 University of Helsinki, Finland Corresponding author, Peter.Engelhardt@Helsinki.Fi