8709
This raises the possibility that activated Artemis , derived from the unjoined D to J ( H ) DNA ends at the IgH locus on chromosome 14 , nicks AID - generated TG mismatches at methyl CpG sites , and this would explain why the breaks at the chromosome 18 MBR occur within the same time window as those on chromosome 14 .
 Chemical: CpG
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: CpG