Mutant gene is not always a killer. (the number of CAG repeats contained in gene linked to Huntington's disease is not enough to cause the neurological disorder)(Biomedicine)(Brief Article)

From: Science News | Date: August 3, 1996 | Copyright information

The gene behind the neurological disorder Huntington's disease continues to surprise investigators. After finding the gene in 1993, researchers discovered that the deadly disease results only when the gene contains an abnormally large number of occurrences of a small sequence of DNA. If a person has too many of these so-called CAG repeats, Huntington's usually strikes. The more repeats the person's gene has, the earlier the disease tends to start. While Huntington's usually strikes adults, the disease has shown up in teenagers.

Recently, investigators have tried to pin down ...

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