Bacteria (microorganisms) 3 Bacteriological Techniques 3 Cell Wall 3 Drug Resistance 3 Electrophoresis, Polyacrylamide Gel 3 Hydrolysis 3 Lactobacillus 3 Lactobacillus casei 3 Microscopy, Electron 3 Osmosis 3 Osmotic stress 3 PBP 3 Penicillin-Binding Proteins 3 Peptidoglycan 3 Posibacteria 3 ampicillin 3 analytic method 3 antibiotic agent 3 antibiotic sensitivity 3 article 3 bacitracin 3 bacterial cell 3 bacterial cell wall 3 cell growth 3 controlled study 3 cytology 3 cytolysis 3 enzyme 3 fosfomycin 3 in vivo study 3