6674
Substitution mutations, which abolished binding of these proteins to the BR3 sequence , significantly increased hIL-5 promoter activity in activated T cells .
 BR3, hIL-5 promoter, activated T cells, BR3 sequence
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:
 BR3, hIL-5 promoter, activated T cells, BR3 sequence