4547
Expression of the beta-chain can be restored by secondary TCR ligation or PMA treatment .
 protein: beta-chain; protein: TCR
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: beta-chain, TCR 
Answer:
 protein: beta-chain; protein: TCR