533
We studied somatic instability by measuring the CTG repeat length at several ages in various tissues of transgenic mice carrying a ( CTG ) 55expansion surrounded by 45 kb of the human DM region , using small - pool PCR .
 Disease: DM
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease 
Text: {0} 
Answer:
 Disease: DM