9422
Next , to identify regions of the promoter involved , we examined a series of tenascin - C promoter constructs with 5 ' deletions and showed that denatured collagen - dependent promoter activity was retained by a 122 - base pair element , located - 43 to - 165 bp upstream of the RNA start site .
 tenascin - C promoter constructs, collagen - dependent promoter
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 tenascin - C promoter constructs, collagen - dependent promoter