5297
Recently, we have identified a repression domain located within the N terminus of Oct-2a ( amino acids 2-99 ).
 amino acids 2-99, N terminus, Oct-2a, repression domain
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 amino acids 2-99, N terminus, Oct-2a, repression domain