13549
Induced DRA expression involves activation of restricted protein kinase C ( PKC ) isoforms , resulting in activated activator protein-1 -dependent transcription .
 DRA, protein-1, PKC, restricted protein kinase C ( PKC ) isoforms, protein kinase C
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:
 DRA, protein-1, PKC, restricted protein kinase C ( PKC ) isoforms, protein kinase C