3873
Another sequence , GGGXGGAG , which is repeated several times in many polyomaviruses and adenoviruses , and which is thought to play a role in DNA replication and / or transcription , is not found in the JCV sequence presented .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 None