No abstract available
MeSH terms
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Alkylation
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Autoradiography*
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Carbon Isotopes*
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Chromatography*
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Escherichia coli K12*
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Escherichia coli*
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Methionine*
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Purines*
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Pyrimidines*
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RNA*
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RNA, Bacterial*
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Research*
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Ribosomes*
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Ultracentrifugation*
Substances
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Carbon Isotopes
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Purines
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Pyrimidines
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RNA, Bacterial
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RNA
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Methionine
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purine