No abstract available
MeSH terms
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Adolescent
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Ampicillin / pharmacology
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Bacterial Infections / etiology*
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Bacterial Infections / microbiology
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Child
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Child, Preschool
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Humans
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Infant
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Microbial Sensitivity Tests
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Neisseria / drug effects
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Neisseria / enzymology*
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Neisseria / isolation & purification
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Otitis Media / etiology*
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Otitis Media / microbiology
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beta-Lactamases / metabolism*
Substances
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Ampicillin
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beta-Lactamases