article 18 nonhuman 18 penicillin G 16 ampicillin 8 antibiotic agent 8 antibiotic sensitivity 8 bacitracin 8 microbiology 8 priority journal 8 vancomycin 8 Bacteriological Techniques 6 Cell Wall 6 Penicillin-Binding Proteins 6 Peptidoglycan 6 bacterial cell wall 6 controlled study 6 fosfomycin 6 penicillin binding protein 6 penicillin resistance 6 peptidoglycan 6 unclassified drug 6 Anti-Bacterial Agents 4 Bacillus subtilis 4 Bacteria (microorganisms) 4 Cattle 4 Drug Resistance 4 Electrophoresis, Polyacrylamide Gel 4 Escherichia coli 4 Hydrolysis 4 Lactobacillus 4