No abstract available
MeSH terms
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Amphibians
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Animals
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Biological Evolution*
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Birds
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Centrifugation, Isopycnic
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DNA / analysis*
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DNA, Satellite / analysis
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Escherichia coli
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Euglena gracilis
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Fishes
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Humans
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Invertebrates
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Mammals
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Reptiles
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Saccharomyces cerevisiae
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Species Specificity
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Tetrahymena pyriformis