14240
In gel-shift assays , the -1280 element and the c-fos SRE cross -competed, whereas their functional and binding mutants did not.
 c-fos SRE cross, binding mutants, -1280 element
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:
 c-fos SRE cross, binding mutants, -1280 element