No abstract available
MeSH terms
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Aged
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Anti-Bacterial Agents / antagonists & inhibitors*
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DNA, Bacterial / analysis
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Drug Resistance, Microbial
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Enzymes / metabolism*
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Humans
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Male
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Plasmids
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Rhizobium / enzymology*
Substances
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Anti-Bacterial Agents
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DNA, Bacterial
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Enzymes