4291
Our study suggests that the interaction of Tax with the transcription factor TFIIA may play a role in Tax -mediated transcriptional activation .
 protein: transcription factor; protein: Tax; protein: Tax; protein: TFIIA
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
 Entities: transcription factor, Tax, Tax, TFIIA 
Answer:
 protein: transcription factor; protein: Tax; protein: Tax; protein: TFIIA