1532
We have shown that both activating regions of Oct-2a , isolated from their natural context, can activate transcription as promoter factors .
 protein: Oct-2a; protein: promoter factors
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: Oct-2a; protein: promoter factors