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Molecular assay reagents intended to identify the number of copies of a ATTCT pentanucleotide repeat in a gene\'s DNA. A variation from the expected number of normal ATTCT pentanucleotide repeats produces altered DNA with improper gene functioning, resulting in a full mutation. ATTCT pentanucleotide repeats in specific genes are related to particular diseases, including spinocerebellar ataxia type 10 (SCA10).
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