1810
Expression of the chemokine receptor BLR2/EBI1 is specifically transactivated by Epstein-Barr virus nuclear antigen 2 .
 protein: BLR2/EBI1; protein: Epstein-Barr virus nuclear antigen 2; protein: chemokine receptor
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: BLR2/EBI1; protein: Epstein-Barr virus nuclear antigen 2; protein: chemokine receptor