11043
Rapid and strong induction of promoter activity was lost in constructs with a mutant AP-1 element ; however, at 16-96 h post-PMA , the mutant collagenase-1 promoter displayed AP-1 independent PMA-mediated transactivation .
 mutant AP-1 element, mutant collagenase-1 promoter, AP-1, collagenase-1 promoter, collagenase-1
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:
 mutant AP-1 element, mutant collagenase-1 promoter, AP-1, collagenase-1 promoter, collagenase-1