No abstract available
Publication types
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Comparative Study
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Research Support, Non-U.S. Gov't
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Chromosome Mapping
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Chromosomes, Human, Pair 21
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DNA / metabolism
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DNA Restriction Enzymes
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Down Syndrome / genetics*
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Genetic Linkage
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Humans
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Nondisjunction, Genetic*
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Polymorphism, Genetic
Substances
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DNA
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DNA Restriction Enzymes