7316
Evidence is also presented, using Fe2+ /Cu2+ ions , that. OH generated from H2O2 through Fenton reactions could be a candidate oxygen reactive species to directly activate STAT3 .
 STAT3
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:
 STAT3