4049
XPB is a subunit of the basal transcription factor TFIIH , which is also involved in nucleotide excision repair (NER) and potentially in cell cycle regulation.
 TFIIH, XPB, transcription factor
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 TFIIH, XPB, transcription factor