30
Thirty - nine of the mutations - including 34 small mutations , 2 large structural alterations , and hypermethylation in 3 tumors - were not detected in the corresponding peripheral blood DNA .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease 
Text: {0} 
Answer:
 None