5487
HTLV-I encodes a potent transactivator protein termed Tax that appears to play an important role in the process of T-cell immortalization .
 protein: transactivator; protein: Tax
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: transactivator, Tax 
Answer:
 protein: transactivator; protein: Tax