Article 158 nonhuman 155 human 130 bacterium 114 controlled study 103 Bacteria 92 Humans 87 genetics 69 microbiology 69 Escherichia coli 58 metabolism 57 female 49 bacterial strain 48 male 46 antiinfective agent 38 bacterium culture 38 chemistry 38 unclassified drug 38 antibiotic resistance 37 RNA 16S 35 Staphylococcus aureus 33 bacterium isolate 32 adult 31 Animals 30 Anti-Bacterial Agents 29 animal 29 antibiotic sensitivity 28 bacterium identification 28 isolation and purification 28 microbial community 28