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