No abstract available
Publication types
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Research Support, U.S. Gov't, Non-P.H.S.
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Animals
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DNA Transposable Elements
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Gram-Negative Bacteria / genetics*
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Gram-Negative Bacteria / ultrastructure
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Microscopy, Electron
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Nucleic Acid Hybridization
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Paramecium / genetics*
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Paramecium / microbiology
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Plasmids
Substances
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DNA Transposable Elements