bacitracin 12 article 10 nonhuman 10 antibiotic sensitivity 8 penicillin G 8 vancomycin 8 Bacitracin 6 Cell Wall 6 Electrophoresis, Polyacrylamide Gel 6 Penicillin-Binding Proteins 6 Peptidoglycan 6 antibiotic agent 6 bacterial cell wall 6 penicillin binding protein 6 peptidoglycan 6 unclassified drug 6 Anti-Bacterial Agents 4 Bacteria (microorganisms) 4 Bacteriological Techniques 4 Drug Resistance 4 Hydrolysis 4 Lactobacillus 4 Lactobacillus casei 4 Mannose 4 Microscopy, Electron 4 Osmosis 4 Osmotic stress 4 PBP 4 Posibacteria 4 ampicillin 4