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Northern blot analysis revealed that BLR2 mRNA could be highly stimulated in mitogen- and anti-CD3- treated peripheral blood lymphocytes .
 RNA: BLR2 mRNA; protein: BLR2
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:
 RNA: BLR2 mRNA; protein: BLR2