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Finally, an abbreviated TSP 1 promoter/5'-flank , containing the SRE- and NF-Y- binding sites , mediated a serum response that was close in magnitude to that of the parent promoter .
 parent promoter, abbreviated TSP 1 promoter/5'-flank
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:
 parent promoter, abbreviated TSP 1 promoter/5'-flank