1592
With HBxAg -specific synthetic polypeptides , several T-cell epitopes were identified.
 protein: HBxAg; protein: T-cell epitopes
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 protein: HBxAg; protein: T-cell epitopes