《英文msh詞典》Expanded Trinucleotide Repeat
[入口詞] Expanded Trinucleotide Repeat
[主題詞] Trinucleotide Repeat Expansion
[英文釋義] An increased number of contiguous trinucleotide repeats in the DNA sequence from one generation to the next. The presence of these regions is associated with diseases such as FRAGILE X SYNDROME and MYOTONIC DYSTROPHY. Some CHROMOSOME FRAGILE SITES are composed of sequences where trinucleotide repeat expansion occurs.