ABC transporter subfamily B 1 Article 1 Burkholderiaceae 1 Germfree soil 1 Metagenomics 1 Microbiome 1 Multidrug resistance genes Resistome 1 antibiotic resistome 1 bacterial colonization 1 bacterial gene 1 bacterial load 1 high throughput sequencing 1 metagenomics 1 microbial community 1 microbiome 1 multidrug resistance 1 nonhuman 1 soil 1 tetracycline 1 tetracycline resistance 1