7856
We analysed two regions involved in preS2 / S gene transcription of the HBV adw subtype : the diverged TATA box and a putative initiator element .
 preS2, S gene
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 preS2, S gene