No abstract available
MeSH terms
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Aged
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Amoxicillin / therapeutic use*
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Ampicillin / analogs & derivatives*
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Anti-Bacterial Agents / therapeutic use*
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Drug Synergism
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Humans
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Male
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Middle Aged
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Neisseriaceae / isolation & purification
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Neisseriaceae / metabolism*
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Penicillinase / biosynthesis
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Respiratory Tract Infections / drug therapy*
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Respiratory Tract Infections / etiology
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Respiratory Tract Infections / microbiology
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beta-Lactams / therapeutic use
Substances
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Anti-Bacterial Agents
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beta-Lactams
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Ampicillin
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Amoxicillin
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Penicillinase