No abstract available
MeSH terms
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Adult
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Aged
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Animal Experimentation
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Animals
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Denmark
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Female
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Humans
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Male
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Mice
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Mice, Inbred BALB C
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Middle Aged
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Multiple Sclerosis / virology*
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Polymerase Chain Reaction / methods
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Virology / methods
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Xenotropic murine leukemia virus-related virus / isolation & purification*